/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-b09bf87
[2020-10-16 11:36:58,734 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-16 11:36:58,737 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-16 11:36:58,761 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-16 11:36:58,761 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2020-10-16 11:36:58,776 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-16 11:36:58,777 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-16 11:36:58,779 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-16 11:36:58,781 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-16 11:36:58,782 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-16 11:36:58,783 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-16 11:36:58,784 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-16 11:36:58,785 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-16 11:36:58,788 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-10-16 11:36:58,788 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-10-16 11:36:58,795 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-16 11:36:58,797 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-16 11:36:58,797 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf
[2020-10-16 11:36:58,820 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-16 11:36:58,820 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-16 11:36:58,822 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-16 11:36:58,822 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-16 11:36:58,822 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-16 11:36:58,822 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-16 11:36:58,822 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-16 11:36:58,823 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-16 11:36:58,823 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-16 11:36:58,823 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-16 11:36:58,823 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-16 11:36:58,823 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-16 11:36:58,824 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-16 11:36:58,824 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-16 11:36:58,824 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-16 11:36:58,824 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-16 11:36:58,824 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-16 11:36:58,824 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-16 11:36:58,825 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-16 11:36:58,825 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-16 11:36:58,825 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-16 11:36:58,825 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-16 11:36:58,825 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-16 11:36:58,826 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=Craig_NestedInterpolation
[2020-10-16 11:36:58,826 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-16 11:36:58,826 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-16 11:36:58,826 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-16 11:36:58,826 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK
[2020-10-16 11:36:58,827 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-16 11:36:59,175 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-16 11:36:59,194 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-16 11:36:59,198 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-16 11:36:59,200 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-16 11:36:59,200 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-16 11:36:59,201 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i
[2020-10-16 11:36:59,275 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ead605c0/19f1ed8b80c34c12920ab483e40968a8/FLAG8374905eb
[2020-10-16 11:36:59,819 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-16 11:36:59,820 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/fib_bench_longer-2.i
[2020-10-16 11:36:59,839 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ead605c0/19f1ed8b80c34c12920ab483e40968a8/FLAG8374905eb
[2020-10-16 11:37:00,125 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ead605c0/19f1ed8b80c34c12920ab483e40968a8
[2020-10-16 11:37:00,134 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-16 11:37:00,136 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2020-10-16 11:37:00,137 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-16 11:37:00,137 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-16 11:37:00,140 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-16 11:37:00,141 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,144 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d418a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00, skipping insertion in model container
[2020-10-16 11:37:00,144 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,152 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-16 11:37:00,194 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-16 11:37:00,694 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-16 11:37:00,709 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-16 11:37:00,787 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-16 11:37:00,853 INFO  L208         MainTranslator]: Completed translation
[2020-10-16 11:37:00,854 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00 WrapperNode
[2020-10-16 11:37:00,854 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-16 11:37:00,855 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-10-16 11:37:00,855 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-10-16 11:37:00,855 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2020-10-16 11:37:00,864 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,880 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,900 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-10-16 11:37:00,901 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-16 11:37:00,901 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-16 11:37:00,901 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-16 11:37:00,910 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,910 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,914 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,914 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,928 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,933 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,935 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
[2020-10-16 11:37:00,937 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-16 11:37:00,938 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-16 11:37:00,938 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-16 11:37:00,938 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-16 11:37:00,939 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-16 11:37:01,015 INFO  L130     BoogieDeclarations]: Found specification of procedure t1
[2020-10-16 11:37:01,015 INFO  L138     BoogieDeclarations]: Found implementation of procedure t1
[2020-10-16 11:37:01,016 INFO  L130     BoogieDeclarations]: Found specification of procedure t2
[2020-10-16 11:37:01,016 INFO  L138     BoogieDeclarations]: Found implementation of procedure t2
[2020-10-16 11:37:01,016 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-16 11:37:01,017 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2020-10-16 11:37:01,017 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-16 11:37:01,017 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-16 11:37:01,017 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2020-10-16 11:37:01,018 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-16 11:37:01,018 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-16 11:37:01,019 WARN  L208             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2020-10-16 11:37:01,324 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-16 11:37:01,324 INFO  L298             CfgBuilder]: Removed 6 assume(true) statements.
[2020-10-16 11:37:01,327 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:37:01 BoogieIcfgContainer
[2020-10-16 11:37:01,327 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-16 11:37:01,328 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-16 11:37:01,328 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-16 11:37:01,332 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-16 11:37:01,332 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:37:00" (1/3) ...
[2020-10-16 11:37:01,333 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b71e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:37:01, skipping insertion in model container
[2020-10-16 11:37:01,334 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:37:00" (2/3) ...
[2020-10-16 11:37:01,335 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b71e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:37:01, skipping insertion in model container
[2020-10-16 11:37:01,335 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:37:01" (3/3) ...
[2020-10-16 11:37:01,337 INFO  L111   eAbstractionObserver]: Analyzing ICFG fib_bench_longer-2.i
[2020-10-16 11:37:01,354 WARN  L153   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2020-10-16 11:37:01,354 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-16 11:37:01,364 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-16 11:37:01,365 INFO  L348   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2020-10-16 11:37:01,394 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,395 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,395 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,395 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,396 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,396 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,396 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,397 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,397 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,397 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,398 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,398 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,399 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,399 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,399 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,400 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,400 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,400 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,400 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,401 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,401 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,401 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,402 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,402 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,402 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,403 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,403 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,403 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,403 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,404 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,408 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,408 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,409 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,410 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,410 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,410 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,416 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,416 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,417 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,417 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,417 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,417 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:37:01,420 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2020-10-16 11:37:01,435 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2020-10-16 11:37:01,459 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-16 11:37:01,459 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-16 11:37:01,460 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-16 11:37:01,460 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-16 11:37:01,460 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-16 11:37:01,460 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-16 11:37:01,460 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-16 11:37:01,461 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-16 11:37:01,473 INFO  L137   etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2020-10-16 11:37:01,474 INFO  L144   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow
[2020-10-16 11:37:01,477 INFO  L111        LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow
[2020-10-16 11:37:01,479 INFO  L71            FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow
[2020-10-16 11:37:01,538 INFO  L129       PetriNetUnfolder]: 5/55 cut-off events.
[2020-10-16 11:37:01,540 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2020-10-16 11:37:01,549 INFO  L80            FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. 
[2020-10-16 11:37:01,553 INFO  L117        LiptonReduction]: Number of co-enabled transitions 1032
[2020-10-16 11:37:02,600 WARN  L193               SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60
[2020-10-16 11:37:02,672 INFO  L132        LiptonReduction]: Checked pairs total: 943
[2020-10-16 11:37:02,673 INFO  L134        LiptonReduction]: Total number of compositions: 50
[2020-10-16 11:37:02,680 INFO  L100   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow
[2020-10-16 11:37:02,692 INFO  L122   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states.
[2020-10-16 11:37:02,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states.
[2020-10-16 11:37:02,702 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2020-10-16 11:37:02,702 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:02,703 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:02,704 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:02,710 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:02,710 INFO  L82        PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times
[2020-10-16 11:37:02,721 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:02,721 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756649110]
[2020-10-16 11:37:02,722 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:02,842 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:02,939 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:02,940 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756649110]
[2020-10-16 11:37:02,941 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:37:02,941 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-10-16 11:37:02,942 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671094015]
[2020-10-16 11:37:02,947 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-16 11:37:02,948 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:02,963 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-16 11:37:02,964 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-16 11:37:02,967 INFO  L87              Difference]: Start difference. First operand 44 states. Second operand 4 states.
[2020-10-16 11:37:03,038 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:03,039 INFO  L93              Difference]: Finished difference Result 83 states and 212 transitions.
[2020-10-16 11:37:03,040 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-16 11:37:03,041 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 6
[2020-10-16 11:37:03,042 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:03,054 INFO  L225             Difference]: With dead ends: 83
[2020-10-16 11:37:03,055 INFO  L226             Difference]: Without dead ends: 54
[2020-10-16 11:37:03,056 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-16 11:37:03,076 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2020-10-16 11:37:03,097 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50.
[2020-10-16 11:37:03,099 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-10-16 11:37:03,100 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions.
[2020-10-16 11:37:03,102 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6
[2020-10-16 11:37:03,103 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:03,103 INFO  L481      AbstractCegarLoop]: Abstraction has 50 states and 120 transitions.
[2020-10-16 11:37:03,103 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-16 11:37:03,103 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions.
[2020-10-16 11:37:03,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-10-16 11:37:03,104 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:03,105 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:03,105 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-16 11:37:03,105 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:03,106 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:03,106 INFO  L82        PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times
[2020-10-16 11:37:03,106 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:03,107 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130689660]
[2020-10-16 11:37:03,107 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:03,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:03,229 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:03,230 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130689660]
[2020-10-16 11:37:03,230 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:37:03,230 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-16 11:37:03,230 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21719702]
[2020-10-16 11:37:03,232 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-16 11:37:03,232 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:03,233 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-16 11:37:03,233 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-16 11:37:03,233 INFO  L87              Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states.
[2020-10-16 11:37:03,285 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:03,285 INFO  L93              Difference]: Finished difference Result 80 states and 186 transitions.
[2020-10-16 11:37:03,286 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-16 11:37:03,286 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 8
[2020-10-16 11:37:03,286 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:03,288 INFO  L225             Difference]: With dead ends: 80
[2020-10-16 11:37:03,288 INFO  L226             Difference]: Without dead ends: 75
[2020-10-16 11:37:03,289 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-16 11:37:03,290 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2020-10-16 11:37:03,297 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55.
[2020-10-16 11:37:03,297 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-10-16 11:37:03,299 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions.
[2020-10-16 11:37:03,299 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8
[2020-10-16 11:37:03,300 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:03,300 INFO  L481      AbstractCegarLoop]: Abstraction has 55 states and 136 transitions.
[2020-10-16 11:37:03,300 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-16 11:37:03,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions.
[2020-10-16 11:37:03,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-10-16 11:37:03,301 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:03,302 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:03,302 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-16 11:37:03,302 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:03,302 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:03,302 INFO  L82        PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times
[2020-10-16 11:37:03,303 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:03,303 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792470612]
[2020-10-16 11:37:03,303 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:03,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:03,370 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:03,370 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792470612]
[2020-10-16 11:37:03,370 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:37:03,371 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-16 11:37:03,371 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584486704]
[2020-10-16 11:37:03,371 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-16 11:37:03,372 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:03,372 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-16 11:37:03,372 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-16 11:37:03,372 INFO  L87              Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states.
[2020-10-16 11:37:03,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:03,398 INFO  L93              Difference]: Finished difference Result 73 states and 170 transitions.
[2020-10-16 11:37:03,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-16 11:37:03,399 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 8
[2020-10-16 11:37:03,399 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:03,400 INFO  L225             Difference]: With dead ends: 73
[2020-10-16 11:37:03,401 INFO  L226             Difference]: Without dead ends: 70
[2020-10-16 11:37:03,401 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-16 11:37:03,402 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2020-10-16 11:37:03,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64.
[2020-10-16 11:37:03,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 64 states.
[2020-10-16 11:37:03,410 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions.
[2020-10-16 11:37:03,410 INFO  L78                 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8
[2020-10-16 11:37:03,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:03,411 INFO  L481      AbstractCegarLoop]: Abstraction has 64 states and 152 transitions.
[2020-10-16 11:37:03,411 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-16 11:37:03,411 INFO  L276                IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions.
[2020-10-16 11:37:03,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-10-16 11:37:03,412 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:03,412 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:03,412 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-16 11:37:03,412 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:03,413 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:03,413 INFO  L82        PathProgramCache]: Analyzing trace with hash -244724056, now seen corresponding path program 2 times
[2020-10-16 11:37:03,413 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:03,413 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23676129]
[2020-10-16 11:37:03,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:03,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:03,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:03,518 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23676129]
[2020-10-16 11:37:03,518 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:37:03,518 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-16 11:37:03,518 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401272258]
[2020-10-16 11:37:03,519 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-16 11:37:03,519 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:03,519 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-16 11:37:03,519 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-16 11:37:03,520 INFO  L87              Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states.
[2020-10-16 11:37:03,578 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:03,579 INFO  L93              Difference]: Finished difference Result 86 states and 202 transitions.
[2020-10-16 11:37:03,579 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-16 11:37:03,579 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 8
[2020-10-16 11:37:03,580 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:03,581 INFO  L225             Difference]: With dead ends: 86
[2020-10-16 11:37:03,581 INFO  L226             Difference]: Without dead ends: 80
[2020-10-16 11:37:03,582 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-16 11:37:03,583 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2020-10-16 11:37:03,589 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66.
[2020-10-16 11:37:03,589 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-10-16 11:37:03,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions.
[2020-10-16 11:37:03,590 INFO  L78                 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8
[2020-10-16 11:37:03,590 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:03,590 INFO  L481      AbstractCegarLoop]: Abstraction has 66 states and 157 transitions.
[2020-10-16 11:37:03,590 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-16 11:37:03,591 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions.
[2020-10-16 11:37:03,591 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-10-16 11:37:03,592 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:03,592 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:03,592 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-16 11:37:03,592 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:03,593 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:03,593 INFO  L82        PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times
[2020-10-16 11:37:03,593 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:03,593 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335041463]
[2020-10-16 11:37:03,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:03,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:03,670 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:03,670 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335041463]
[2020-10-16 11:37:03,670 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206705471]
[2020-10-16 11:37:03,671 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:03,723 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:03,723 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:03,725 INFO  L263         TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 11:37:03,730 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:03,797 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:03,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:03,819 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:03,819 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8
[2020-10-16 11:37:03,820 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121309052]
[2020-10-16 11:37:03,820 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-16 11:37:03,820 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:03,820 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-16 11:37:03,821 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2020-10-16 11:37:03,821 INFO  L87              Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states.
[2020-10-16 11:37:03,887 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:03,887 INFO  L93              Difference]: Finished difference Result 101 states and 235 transitions.
[2020-10-16 11:37:03,888 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:03,888 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 9
[2020-10-16 11:37:03,888 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:03,889 INFO  L225             Difference]: With dead ends: 101
[2020-10-16 11:37:03,889 INFO  L226             Difference]: Without dead ends: 96
[2020-10-16 11:37:03,890 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:03,891 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2020-10-16 11:37:03,896 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71.
[2020-10-16 11:37:03,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-10-16 11:37:03,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions.
[2020-10-16 11:37:03,897 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9
[2020-10-16 11:37:03,898 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:03,898 INFO  L481      AbstractCegarLoop]: Abstraction has 71 states and 173 transitions.
[2020-10-16 11:37:03,898 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-16 11:37:03,898 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions.
[2020-10-16 11:37:03,899 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-10-16 11:37:03,899 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:03,899 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:04,112 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:04,113 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:04,114 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:04,114 INFO  L82        PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 3 times
[2020-10-16 11:37:04,115 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:04,115 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884418828]
[2020-10-16 11:37:04,115 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:04,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:04,185 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:04,186 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884418828]
[2020-10-16 11:37:04,186 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400463307]
[2020-10-16 11:37:04,186 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:04,248 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:04,248 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:04,249 INFO  L263         TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 11:37:04,250 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:04,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:04,326 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:04,327 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2020-10-16 11:37:04,327 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939176926]
[2020-10-16 11:37:04,327 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 11:37:04,327 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:04,328 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 11:37:04,328 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2020-10-16 11:37:04,328 INFO  L87              Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states.
[2020-10-16 11:37:04,358 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:04,359 INFO  L93              Difference]: Finished difference Result 84 states and 199 transitions.
[2020-10-16 11:37:04,359 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-10-16 11:37:04,359 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 9
[2020-10-16 11:37:04,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:04,360 INFO  L225             Difference]: With dead ends: 84
[2020-10-16 11:37:04,360 INFO  L226             Difference]: Without dead ends: 81
[2020-10-16 11:37:04,361 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2020-10-16 11:37:04,362 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2020-10-16 11:37:04,367 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74.
[2020-10-16 11:37:04,367 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-10-16 11:37:04,368 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions.
[2020-10-16 11:37:04,368 INFO  L78                 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9
[2020-10-16 11:37:04,368 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:04,368 INFO  L481      AbstractCegarLoop]: Abstraction has 74 states and 179 transitions.
[2020-10-16 11:37:04,368 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 11:37:04,369 INFO  L276                IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions.
[2020-10-16 11:37:04,369 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-10-16 11:37:04,369 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:04,370 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:04,583 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:04,584 INFO  L429      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:04,584 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:04,585 INFO  L82        PathProgramCache]: Analyzing trace with hash 1003489542, now seen corresponding path program 4 times
[2020-10-16 11:37:04,585 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:04,585 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359258517]
[2020-10-16 11:37:04,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:04,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:04,671 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:04,671 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359258517]
[2020-10-16 11:37:04,672 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005115149]
[2020-10-16 11:37:04,672 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:04,731 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:04,731 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:04,732 INFO  L263         TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 11:37:04,733 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:04,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:04,804 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:04,804 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2020-10-16 11:37:04,805 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157844132]
[2020-10-16 11:37:04,806 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 11:37:04,806 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:04,806 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 11:37:04,807 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2020-10-16 11:37:04,807 INFO  L87              Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states.
[2020-10-16 11:37:04,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:04,860 INFO  L93              Difference]: Finished difference Result 90 states and 213 transitions.
[2020-10-16 11:37:04,861 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-16 11:37:04,861 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 9
[2020-10-16 11:37:04,862 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:04,862 INFO  L225             Difference]: With dead ends: 90
[2020-10-16 11:37:04,863 INFO  L226             Difference]: Without dead ends: 87
[2020-10-16 11:37:04,865 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2020-10-16 11:37:04,866 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2020-10-16 11:37:04,877 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76.
[2020-10-16 11:37:04,877 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-10-16 11:37:04,878 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions.
[2020-10-16 11:37:04,882 INFO  L78                 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9
[2020-10-16 11:37:04,883 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:04,883 INFO  L481      AbstractCegarLoop]: Abstraction has 76 states and 186 transitions.
[2020-10-16 11:37:04,883 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 11:37:04,883 INFO  L276                IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions.
[2020-10-16 11:37:04,884 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-10-16 11:37:04,884 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:04,884 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:05,085 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:05,085 INFO  L429      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:05,086 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:05,086 INFO  L82        PathProgramCache]: Analyzing trace with hash 1003511862, now seen corresponding path program 5 times
[2020-10-16 11:37:05,086 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:05,086 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546357502]
[2020-10-16 11:37:05,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:05,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:05,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:05,140 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546357502]
[2020-10-16 11:37:05,140 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075797350]
[2020-10-16 11:37:05,140 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:05,205 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:05,205 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:05,206 INFO  L263         TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-16 11:37:05,207 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:05,255 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:05,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:05,268 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:05,268 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2020-10-16 11:37:05,268 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700893799]
[2020-10-16 11:37:05,269 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-16 11:37:05,269 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:05,269 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-16 11:37:05,269 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72
[2020-10-16 11:37:05,270 INFO  L87              Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states.
[2020-10-16 11:37:05,366 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:05,367 INFO  L93              Difference]: Finished difference Result 99 states and 237 transitions.
[2020-10-16 11:37:05,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:05,367 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 9
[2020-10-16 11:37:05,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:05,368 INFO  L225             Difference]: With dead ends: 99
[2020-10-16 11:37:05,369 INFO  L226             Difference]: Without dead ends: 93
[2020-10-16 11:37:05,369 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132
[2020-10-16 11:37:05,370 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2020-10-16 11:37:05,374 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77.
[2020-10-16 11:37:05,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 77 states.
[2020-10-16 11:37:05,375 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions.
[2020-10-16 11:37:05,375 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9
[2020-10-16 11:37:05,375 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:05,375 INFO  L481      AbstractCegarLoop]: Abstraction has 77 states and 190 transitions.
[2020-10-16 11:37:05,376 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-16 11:37:05,376 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions.
[2020-10-16 11:37:05,376 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:05,377 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:05,377 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:05,591 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:05,591 INFO  L429      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:05,592 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:05,592 INFO  L82        PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times
[2020-10-16 11:37:05,592 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:05,593 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862959077]
[2020-10-16 11:37:05,593 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:05,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:05,650 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:05,651 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862959077]
[2020-10-16 11:37:05,651 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:37:05,651 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-16 11:37:05,651 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134033265]
[2020-10-16 11:37:05,652 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-16 11:37:05,652 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:05,652 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-16 11:37:05,652 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-16 11:37:05,653 INFO  L87              Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states.
[2020-10-16 11:37:05,680 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:05,680 INFO  L93              Difference]: Finished difference Result 92 states and 220 transitions.
[2020-10-16 11:37:05,681 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-10-16 11:37:05,681 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-10-16 11:37:05,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:05,682 INFO  L225             Difference]: With dead ends: 92
[2020-10-16 11:37:05,682 INFO  L226             Difference]: Without dead ends: 90
[2020-10-16 11:37:05,682 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-16 11:37:05,683 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-10-16 11:37:05,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79.
[2020-10-16 11:37:05,687 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2020-10-16 11:37:05,687 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions.
[2020-10-16 11:37:05,688 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10
[2020-10-16 11:37:05,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:05,688 INFO  L481      AbstractCegarLoop]: Abstraction has 79 states and 194 transitions.
[2020-10-16 11:37:05,688 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-16 11:37:05,688 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions.
[2020-10-16 11:37:05,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:05,689 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:05,689 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:05,690 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-10-16 11:37:05,690 INFO  L429      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:05,690 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:05,690 INFO  L82        PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times
[2020-10-16 11:37:05,690 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:05,691 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783533531]
[2020-10-16 11:37:05,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:05,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:05,753 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:05,754 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783533531]
[2020-10-16 11:37:05,754 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:37:05,755 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-16 11:37:05,755 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263918113]
[2020-10-16 11:37:05,755 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-16 11:37:05,756 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:05,756 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-16 11:37:05,756 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-10-16 11:37:05,756 INFO  L87              Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states.
[2020-10-16 11:37:05,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:05,820 INFO  L93              Difference]: Finished difference Result 100 states and 234 transitions.
[2020-10-16 11:37:05,821 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-16 11:37:05,821 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-10-16 11:37:05,821 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:05,822 INFO  L225             Difference]: With dead ends: 100
[2020-10-16 11:37:05,822 INFO  L226             Difference]: Without dead ends: 98
[2020-10-16 11:37:05,823 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-16 11:37:05,823 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2020-10-16 11:37:05,833 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83.
[2020-10-16 11:37:05,833 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 83 states.
[2020-10-16 11:37:05,834 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions.
[2020-10-16 11:37:05,834 INFO  L78                 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10
[2020-10-16 11:37:05,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:05,834 INFO  L481      AbstractCegarLoop]: Abstraction has 83 states and 200 transitions.
[2020-10-16 11:37:05,834 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-16 11:37:05,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions.
[2020-10-16 11:37:05,835 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:05,835 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:05,835 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:05,836 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-10-16 11:37:05,836 INFO  L429      AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:05,836 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:05,836 INFO  L82        PathProgramCache]: Analyzing trace with hash -1490550578, now seen corresponding path program 3 times
[2020-10-16 11:37:05,836 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:05,837 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346011827]
[2020-10-16 11:37:05,837 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:05,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:05,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:05,928 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346011827]
[2020-10-16 11:37:05,929 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:37:05,929 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-16 11:37:05,929 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350534185]
[2020-10-16 11:37:05,929 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-16 11:37:05,930 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:05,930 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-16 11:37:05,930 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-10-16 11:37:05,930 INFO  L87              Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states.
[2020-10-16 11:37:06,004 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:06,004 INFO  L93              Difference]: Finished difference Result 105 states and 246 transitions.
[2020-10-16 11:37:06,005 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:06,005 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-10-16 11:37:06,005 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:06,006 INFO  L225             Difference]: With dead ends: 105
[2020-10-16 11:37:06,006 INFO  L226             Difference]: Without dead ends: 100
[2020-10-16 11:37:06,007 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2020-10-16 11:37:06,007 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2020-10-16 11:37:06,010 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82.
[2020-10-16 11:37:06,010 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-10-16 11:37:06,011 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions.
[2020-10-16 11:37:06,011 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10
[2020-10-16 11:37:06,011 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:06,011 INFO  L481      AbstractCegarLoop]: Abstraction has 82 states and 198 transitions.
[2020-10-16 11:37:06,011 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-16 11:37:06,011 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions.
[2020-10-16 11:37:06,012 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:06,012 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:06,012 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:06,012 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-10-16 11:37:06,013 INFO  L429      AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:06,013 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:06,013 INFO  L82        PathProgramCache]: Analyzing trace with hash -1490521748, now seen corresponding path program 4 times
[2020-10-16 11:37:06,013 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:06,013 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726036796]
[2020-10-16 11:37:06,014 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:06,021 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:06,090 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:06,091 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726036796]
[2020-10-16 11:37:06,093 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:37:06,093 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-16 11:37:06,093 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449657245]
[2020-10-16 11:37:06,094 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-16 11:37:06,097 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:06,097 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-16 11:37:06,098 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-10-16 11:37:06,098 INFO  L87              Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states.
[2020-10-16 11:37:06,176 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:06,177 INFO  L93              Difference]: Finished difference Result 105 states and 246 transitions.
[2020-10-16 11:37:06,177 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:06,177 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-10-16 11:37:06,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:06,178 INFO  L225             Difference]: With dead ends: 105
[2020-10-16 11:37:06,179 INFO  L226             Difference]: Without dead ends: 100
[2020-10-16 11:37:06,179 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2020-10-16 11:37:06,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2020-10-16 11:37:06,184 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82.
[2020-10-16 11:37:06,184 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-10-16 11:37:06,185 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions.
[2020-10-16 11:37:06,185 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10
[2020-10-16 11:37:06,185 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:06,185 INFO  L481      AbstractCegarLoop]: Abstraction has 82 states and 194 transitions.
[2020-10-16 11:37:06,186 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-16 11:37:06,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions.
[2020-10-16 11:37:06,186 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:06,186 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:06,187 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:06,187 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-10-16 11:37:06,187 INFO  L429      AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:06,187 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:06,187 INFO  L82        PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times
[2020-10-16 11:37:06,188 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:06,188 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099522330]
[2020-10-16 11:37:06,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:06,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:06,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:06,293 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099522330]
[2020-10-16 11:37:06,293 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726462856]
[2020-10-16 11:37:06,293 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:06,349 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:06,349 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:06,350 INFO  L263         TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:06,355 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:06,457 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:06,487 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:06,487 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:06,488 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10
[2020-10-16 11:37:06,488 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69704548]
[2020-10-16 11:37:06,488 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 11:37:06,488 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:06,489 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 11:37:06,489 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2020-10-16 11:37:06,490 INFO  L87              Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states.
[2020-10-16 11:37:06,596 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:06,596 INFO  L93              Difference]: Finished difference Result 122 states and 284 transitions.
[2020-10-16 11:37:06,597 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:06,597 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 10
[2020-10-16 11:37:06,597 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:06,598 INFO  L225             Difference]: With dead ends: 122
[2020-10-16 11:37:06,598 INFO  L226             Difference]: Without dead ends: 117
[2020-10-16 11:37:06,599 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:37:06,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2020-10-16 11:37:06,603 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88.
[2020-10-16 11:37:06,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2020-10-16 11:37:06,604 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions.
[2020-10-16 11:37:06,604 INFO  L78                 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10
[2020-10-16 11:37:06,605 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:06,605 INFO  L481      AbstractCegarLoop]: Abstraction has 88 states and 215 transitions.
[2020-10-16 11:37:06,605 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 11:37:06,605 INFO  L276                IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions.
[2020-10-16 11:37:06,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:06,605 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:06,606 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:06,816 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2020-10-16 11:37:06,817 INFO  L429      AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:06,817 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:06,817 INFO  L82        PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 6 times
[2020-10-16 11:37:06,818 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:06,818 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521036760]
[2020-10-16 11:37:06,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:06,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:06,900 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:06,901 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521036760]
[2020-10-16 11:37:06,901 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480453475]
[2020-10-16 11:37:06,901 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:06,943 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:06,943 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:06,944 INFO  L263         TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:06,945 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:07,038 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:07,038 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:07,039 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:07,039 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619804835]
[2020-10-16 11:37:07,039 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:07,039 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:07,040 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:07,040 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:07,040 INFO  L87              Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states.
[2020-10-16 11:37:07,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:07,082 INFO  L93              Difference]: Finished difference Result 108 states and 255 transitions.
[2020-10-16 11:37:07,082 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-16 11:37:07,082 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 10
[2020-10-16 11:37:07,083 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:07,084 INFO  L225             Difference]: With dead ends: 108
[2020-10-16 11:37:07,084 INFO  L226             Difference]: Without dead ends: 105
[2020-10-16 11:37:07,084 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:07,085 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2020-10-16 11:37:07,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91.
[2020-10-16 11:37:07,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2020-10-16 11:37:07,088 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions.
[2020-10-16 11:37:07,088 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10
[2020-10-16 11:37:07,088 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:07,089 INFO  L481      AbstractCegarLoop]: Abstraction has 91 states and 221 transitions.
[2020-10-16 11:37:07,089 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:07,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions.
[2020-10-16 11:37:07,089 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:07,089 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:07,090 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:07,290 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:07,291 INFO  L429      AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:07,291 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:07,291 INFO  L82        PathProgramCache]: Analyzing trace with hash 1043405416, now seen corresponding path program 7 times
[2020-10-16 11:37:07,292 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:07,292 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549940478]
[2020-10-16 11:37:07,292 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:07,300 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:07,361 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:07,362 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549940478]
[2020-10-16 11:37:07,362 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760320556]
[2020-10-16 11:37:07,362 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:07,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:07,407 INFO  L263         TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:07,408 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:07,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:07,505 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:07,505 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:07,506 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802869129]
[2020-10-16 11:37:07,506 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:07,506 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:07,507 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:07,507 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:07,507 INFO  L87              Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states.
[2020-10-16 11:37:07,577 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:07,578 INFO  L93              Difference]: Finished difference Result 116 states and 270 transitions.
[2020-10-16 11:37:07,578 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-16 11:37:07,578 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 10
[2020-10-16 11:37:07,578 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:07,579 INFO  L225             Difference]: With dead ends: 116
[2020-10-16 11:37:07,579 INFO  L226             Difference]: Without dead ends: 113
[2020-10-16 11:37:07,580 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132
[2020-10-16 11:37:07,581 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2020-10-16 11:37:07,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92.
[2020-10-16 11:37:07,584 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-16 11:37:07,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions.
[2020-10-16 11:37:07,585 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10
[2020-10-16 11:37:07,585 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:07,585 INFO  L481      AbstractCegarLoop]: Abstraction has 92 states and 223 transitions.
[2020-10-16 11:37:07,585 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:07,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions.
[2020-10-16 11:37:07,586 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:07,586 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:07,586 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:07,798 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2020-10-16 11:37:07,799 INFO  L429      AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:07,799 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:07,800 INFO  L82        PathProgramCache]: Analyzing trace with hash 1044097336, now seen corresponding path program 8 times
[2020-10-16 11:37:07,800 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:07,801 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657700784]
[2020-10-16 11:37:07,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:07,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:07,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:07,880 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657700784]
[2020-10-16 11:37:07,881 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143171773]
[2020-10-16 11:37:07,881 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:07,959 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:07,959 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:07,960 INFO  L263         TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:07,961 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:08,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:08,043 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:08,044 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:08,044 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699684187]
[2020-10-16 11:37:08,044 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:08,044 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:08,044 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:08,045 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:08,045 INFO  L87              Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states.
[2020-10-16 11:37:08,135 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:08,136 INFO  L93              Difference]: Finished difference Result 115 states and 270 transitions.
[2020-10-16 11:37:08,136 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:08,136 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 10
[2020-10-16 11:37:08,136 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:08,137 INFO  L225             Difference]: With dead ends: 115
[2020-10-16 11:37:08,138 INFO  L226             Difference]: Without dead ends: 112
[2020-10-16 11:37:08,138 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:08,138 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2020-10-16 11:37:08,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94.
[2020-10-16 11:37:08,143 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 94 states.
[2020-10-16 11:37:08,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions.
[2020-10-16 11:37:08,145 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10
[2020-10-16 11:37:08,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:08,146 INFO  L481      AbstractCegarLoop]: Abstraction has 94 states and 230 transitions.
[2020-10-16 11:37:08,146 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:08,146 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions.
[2020-10-16 11:37:08,147 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-10-16 11:37:08,147 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:08,147 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:08,348 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2020-10-16 11:37:08,349 INFO  L429      AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:08,349 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:08,349 INFO  L82        PathProgramCache]: Analyzing trace with hash 1044119656, now seen corresponding path program 9 times
[2020-10-16 11:37:08,349 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:08,350 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103042683]
[2020-10-16 11:37:08,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:08,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:08,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:08,430 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103042683]
[2020-10-16 11:37:08,430 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287484914]
[2020-10-16 11:37:08,431 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:08,478 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:08,479 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:08,479 INFO  L263         TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:08,480 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:08,551 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:08,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:08,562 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:08,562 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:08,562 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238422012]
[2020-10-16 11:37:08,562 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:08,562 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:08,563 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:08,563 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:08,563 INFO  L87              Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states.
[2020-10-16 11:37:08,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:08,675 INFO  L93              Difference]: Finished difference Result 124 states and 294 transitions.
[2020-10-16 11:37:08,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:08,676 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 10
[2020-10-16 11:37:08,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:08,677 INFO  L225             Difference]: With dead ends: 124
[2020-10-16 11:37:08,677 INFO  L226             Difference]: Without dead ends: 118
[2020-10-16 11:37:08,678 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:08,679 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2020-10-16 11:37:08,682 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94.
[2020-10-16 11:37:08,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 94 states.
[2020-10-16 11:37:08,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions.
[2020-10-16 11:37:08,683 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10
[2020-10-16 11:37:08,683 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:08,683 INFO  L481      AbstractCegarLoop]: Abstraction has 94 states and 232 transitions.
[2020-10-16 11:37:08,683 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:08,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions.
[2020-10-16 11:37:08,684 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:08,684 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:08,684 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:08,896 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2020-10-16 11:37:08,897 INFO  L429      AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:08,897 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:08,898 INFO  L82        PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 5 times
[2020-10-16 11:37:08,898 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:08,898 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054955675]
[2020-10-16 11:37:08,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:08,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:08,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:08,962 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054955675]
[2020-10-16 11:37:08,962 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711619695]
[2020-10-16 11:37:08,962 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:09,031 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:09,031 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:09,032 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:09,033 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:09,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:09,105 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:09,105 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:09,106 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158777437]
[2020-10-16 11:37:09,106 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:09,107 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:09,107 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:09,107 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:09,107 INFO  L87              Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states.
[2020-10-16 11:37:09,152 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:09,152 INFO  L93              Difference]: Finished difference Result 113 states and 270 transitions.
[2020-10-16 11:37:09,153 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-16 11:37:09,153 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:09,153 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:09,154 INFO  L225             Difference]: With dead ends: 113
[2020-10-16 11:37:09,154 INFO  L226             Difference]: Without dead ends: 111
[2020-10-16 11:37:09,154 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:09,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2020-10-16 11:37:09,157 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96.
[2020-10-16 11:37:09,158 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 96 states.
[2020-10-16 11:37:09,158 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions.
[2020-10-16 11:37:09,158 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11
[2020-10-16 11:37:09,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:09,159 INFO  L481      AbstractCegarLoop]: Abstraction has 96 states and 238 transitions.
[2020-10-16 11:37:09,159 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:09,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions.
[2020-10-16 11:37:09,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:09,160 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:09,160 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:09,369 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2020-10-16 11:37:09,370 INFO  L429      AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:09,371 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:09,371 INFO  L82        PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 6 times
[2020-10-16 11:37:09,371 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:09,372 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907710642]
[2020-10-16 11:37:09,372 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:09,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:09,432 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:09,432 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907710642]
[2020-10-16 11:37:09,432 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84095476]
[2020-10-16 11:37:09,433 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:09,487 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:09,487 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:09,488 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:09,489 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:09,565 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:09,566 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:09,566 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:09,566 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003483399]
[2020-10-16 11:37:09,566 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:09,567 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:09,568 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:09,568 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:09,568 INFO  L87              Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states.
[2020-10-16 11:37:09,657 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:09,657 INFO  L93              Difference]: Finished difference Result 118 states and 280 transitions.
[2020-10-16 11:37:09,658 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-16 11:37:09,658 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:09,658 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:09,659 INFO  L225             Difference]: With dead ends: 118
[2020-10-16 11:37:09,660 INFO  L226             Difference]: Without dead ends: 116
[2020-10-16 11:37:09,660 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:09,661 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2020-10-16 11:37:09,664 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97.
[2020-10-16 11:37:09,664 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 97 states.
[2020-10-16 11:37:09,664 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions.
[2020-10-16 11:37:09,665 INFO  L78                 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11
[2020-10-16 11:37:09,665 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:09,665 INFO  L481      AbstractCegarLoop]: Abstraction has 97 states and 239 transitions.
[2020-10-16 11:37:09,665 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:09,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions.
[2020-10-16 11:37:09,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:09,666 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:09,666 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:09,878 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:09,879 INFO  L429      AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:09,879 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:09,880 INFO  L82        PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 7 times
[2020-10-16 11:37:09,880 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:09,881 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329141165]
[2020-10-16 11:37:09,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:09,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:09,963 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:09,963 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329141165]
[2020-10-16 11:37:09,963 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067441508]
[2020-10-16 11:37:09,963 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:10,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:10,004 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:10,004 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:10,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:10,072 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:10,072 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:10,072 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466789093]
[2020-10-16 11:37:10,073 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:10,073 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:10,073 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:10,073 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:10,074 INFO  L87              Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states.
[2020-10-16 11:37:10,146 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:10,146 INFO  L93              Difference]: Finished difference Result 119 states and 282 transitions.
[2020-10-16 11:37:10,147 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-16 11:37:10,147 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:10,147 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:10,148 INFO  L225             Difference]: With dead ends: 119
[2020-10-16 11:37:10,148 INFO  L226             Difference]: Without dead ends: 117
[2020-10-16 11:37:10,149 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:10,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2020-10-16 11:37:10,152 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98.
[2020-10-16 11:37:10,152 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 98 states.
[2020-10-16 11:37:10,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions.
[2020-10-16 11:37:10,153 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11
[2020-10-16 11:37:10,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:10,153 INFO  L481      AbstractCegarLoop]: Abstraction has 98 states and 241 transitions.
[2020-10-16 11:37:10,153 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:10,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions.
[2020-10-16 11:37:10,154 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:10,154 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:10,154 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:10,364 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:10,365 INFO  L429      AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:10,365 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:10,365 INFO  L82        PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 8 times
[2020-10-16 11:37:10,366 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:10,366 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047742463]
[2020-10-16 11:37:10,366 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:10,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:10,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:10,445 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047742463]
[2020-10-16 11:37:10,445 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612338616]
[2020-10-16 11:37:10,445 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:10,498 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:10,498 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:10,499 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:10,500 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:10,600 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:10,601 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:10,601 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:10,601 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124912822]
[2020-10-16 11:37:10,602 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:10,602 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:10,602 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:10,602 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:10,602 INFO  L87              Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states.
[2020-10-16 11:37:10,672 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:10,672 INFO  L93              Difference]: Finished difference Result 122 states and 288 transitions.
[2020-10-16 11:37:10,673 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-16 11:37:10,673 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:10,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:10,674 INFO  L225             Difference]: With dead ends: 122
[2020-10-16 11:37:10,674 INFO  L226             Difference]: Without dead ends: 120
[2020-10-16 11:37:10,675 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132
[2020-10-16 11:37:10,675 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2020-10-16 11:37:10,678 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100.
[2020-10-16 11:37:10,678 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2020-10-16 11:37:10,679 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions.
[2020-10-16 11:37:10,679 INFO  L78                 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11
[2020-10-16 11:37:10,680 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:10,681 INFO  L481      AbstractCegarLoop]: Abstraction has 100 states and 247 transitions.
[2020-10-16 11:37:10,681 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:10,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions.
[2020-10-16 11:37:10,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:10,681 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:10,682 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:10,882 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2020-10-16 11:37:10,882 INFO  L429      AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:10,883 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:10,883 INFO  L82        PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 9 times
[2020-10-16 11:37:10,883 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:10,884 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834324974]
[2020-10-16 11:37:10,884 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:10,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:10,984 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:10,984 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834324974]
[2020-10-16 11:37:10,984 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748591432]
[2020-10-16 11:37:10,985 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:11,036 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:11,036 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:11,037 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:11,039 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:11,115 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:11,115 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:11,116 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:11,116 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075185089]
[2020-10-16 11:37:11,116 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:11,117 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:11,117 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:11,117 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:11,117 INFO  L87              Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states.
[2020-10-16 11:37:11,207 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:11,207 INFO  L93              Difference]: Finished difference Result 123 states and 290 transitions.
[2020-10-16 11:37:11,208 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:11,208 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:11,208 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:11,209 INFO  L225             Difference]: With dead ends: 123
[2020-10-16 11:37:11,209 INFO  L226             Difference]: Without dead ends: 121
[2020-10-16 11:37:11,209 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182
[2020-10-16 11:37:11,210 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2020-10-16 11:37:11,212 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99.
[2020-10-16 11:37:11,212 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 99 states.
[2020-10-16 11:37:11,213 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions.
[2020-10-16 11:37:11,213 INFO  L78                 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11
[2020-10-16 11:37:11,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:11,213 INFO  L481      AbstractCegarLoop]: Abstraction has 99 states and 243 transitions.
[2020-10-16 11:37:11,214 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:11,214 INFO  L276                IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions.
[2020-10-16 11:37:11,214 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:11,214 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:11,214 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:11,424 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:11,424 INFO  L429      AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:11,425 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:11,425 INFO  L82        PathProgramCache]: Analyzing trace with hash 1037543233, now seen corresponding path program 10 times
[2020-10-16 11:37:11,425 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:11,425 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774578890]
[2020-10-16 11:37:11,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:11,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:11,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:11,486 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774578890]
[2020-10-16 11:37:11,486 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953935364]
[2020-10-16 11:37:11,486 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:11,533 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:11,533 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:11,534 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:11,535 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:11,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:11,610 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:11,610 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:11,610 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378654396]
[2020-10-16 11:37:11,611 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:11,611 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:11,611 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:11,611 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:11,611 INFO  L87              Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states.
[2020-10-16 11:37:11,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:11,692 INFO  L93              Difference]: Finished difference Result 123 states and 287 transitions.
[2020-10-16 11:37:11,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:11,692 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:11,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:11,694 INFO  L225             Difference]: With dead ends: 123
[2020-10-16 11:37:11,694 INFO  L226             Difference]: Without dead ends: 121
[2020-10-16 11:37:11,694 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:11,695 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2020-10-16 11:37:11,698 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103.
[2020-10-16 11:37:11,698 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 103 states.
[2020-10-16 11:37:11,699 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions.
[2020-10-16 11:37:11,699 INFO  L78                 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11
[2020-10-16 11:37:11,699 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:11,700 INFO  L481      AbstractCegarLoop]: Abstraction has 103 states and 249 transitions.
[2020-10-16 11:37:11,700 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:11,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions.
[2020-10-16 11:37:11,702 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:11,702 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:11,703 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:11,903 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2020-10-16 11:37:11,903 INFO  L429      AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:11,904 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:11,904 INFO  L82        PathProgramCache]: Analyzing trace with hash 1037565553, now seen corresponding path program 11 times
[2020-10-16 11:37:11,905 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:11,905 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627044105]
[2020-10-16 11:37:11,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:11,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:11,988 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:11,988 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627044105]
[2020-10-16 11:37:11,988 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183221181]
[2020-10-16 11:37:11,988 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:12,058 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:12,059 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:12,060 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:12,061 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:12,119 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:12,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:12,156 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:12,156 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:12,156 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637434158]
[2020-10-16 11:37:12,157 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:12,157 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:12,157 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:12,157 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:12,158 INFO  L87              Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states.
[2020-10-16 11:37:12,327 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:12,327 INFO  L93              Difference]: Finished difference Result 133 states and 314 transitions.
[2020-10-16 11:37:12,327 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:12,328 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:12,328 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:12,329 INFO  L225             Difference]: With dead ends: 133
[2020-10-16 11:37:12,331 INFO  L226             Difference]: Without dead ends: 128
[2020-10-16 11:37:12,331 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:12,332 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2020-10-16 11:37:12,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102.
[2020-10-16 11:37:12,340 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 102 states.
[2020-10-16 11:37:12,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions.
[2020-10-16 11:37:12,341 INFO  L78                 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11
[2020-10-16 11:37:12,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:12,341 INFO  L481      AbstractCegarLoop]: Abstraction has 102 states and 247 transitions.
[2020-10-16 11:37:12,341 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:12,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions.
[2020-10-16 11:37:12,345 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:12,345 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:12,345 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:12,545 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:12,546 INFO  L429      AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:12,546 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:12,546 INFO  L82        PathProgramCache]: Analyzing trace with hash 1037573024, now seen corresponding path program 12 times
[2020-10-16 11:37:12,547 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:12,547 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595886832]
[2020-10-16 11:37:12,547 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:12,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:12,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:12,611 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595886832]
[2020-10-16 11:37:12,611 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015299508]
[2020-10-16 11:37:12,612 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:12,678 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:12,678 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:12,679 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:12,680 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:12,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:12,747 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:12,747 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:12,748 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515359899]
[2020-10-16 11:37:12,748 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:12,748 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:12,749 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:12,749 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:12,749 INFO  L87              Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states.
[2020-10-16 11:37:12,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:12,843 INFO  L93              Difference]: Finished difference Result 127 states and 298 transitions.
[2020-10-16 11:37:12,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:12,843 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:12,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:12,844 INFO  L225             Difference]: With dead ends: 127
[2020-10-16 11:37:12,845 INFO  L226             Difference]: Without dead ends: 125
[2020-10-16 11:37:12,845 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:12,846 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2020-10-16 11:37:12,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104.
[2020-10-16 11:37:12,848 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 104 states.
[2020-10-16 11:37:12,849 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions.
[2020-10-16 11:37:12,849 INFO  L78                 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11
[2020-10-16 11:37:12,849 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:12,850 INFO  L481      AbstractCegarLoop]: Abstraction has 104 states and 254 transitions.
[2020-10-16 11:37:12,850 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:12,850 INFO  L276                IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions.
[2020-10-16 11:37:12,850 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:12,850 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:12,850 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:13,060 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2020-10-16 11:37:13,061 INFO  L429      AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:13,061 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:13,061 INFO  L82        PathProgramCache]: Analyzing trace with hash 1037594383, now seen corresponding path program 13 times
[2020-10-16 11:37:13,061 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:13,062 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466185715]
[2020-10-16 11:37:13,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:13,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:13,130 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:13,131 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466185715]
[2020-10-16 11:37:13,131 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949051760]
[2020-10-16 11:37:13,131 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:13,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:13,175 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:13,176 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:13,232 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:13,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:13,249 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:13,249 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:13,249 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347943752]
[2020-10-16 11:37:13,249 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:13,249 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:13,250 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:13,250 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:13,250 INFO  L87              Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states.
[2020-10-16 11:37:13,436 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:13,436 INFO  L93              Difference]: Finished difference Result 141 states and 334 transitions.
[2020-10-16 11:37:13,436 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:37:13,436 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:13,437 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:13,438 INFO  L225             Difference]: With dead ends: 141
[2020-10-16 11:37:13,438 INFO  L226             Difference]: Without dead ends: 136
[2020-10-16 11:37:13,438 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380
[2020-10-16 11:37:13,439 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2020-10-16 11:37:13,442 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104.
[2020-10-16 11:37:13,442 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 104 states.
[2020-10-16 11:37:13,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions.
[2020-10-16 11:37:13,443 INFO  L78                 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11
[2020-10-16 11:37:13,443 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:13,443 INFO  L481      AbstractCegarLoop]: Abstraction has 104 states and 254 transitions.
[2020-10-16 11:37:13,443 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:13,443 INFO  L276                IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions.
[2020-10-16 11:37:13,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:13,445 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:13,445 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:13,656 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2020-10-16 11:37:13,656 INFO  L429      AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:13,657 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:13,657 INFO  L82        PathProgramCache]: Analyzing trace with hash 1037595344, now seen corresponding path program 14 times
[2020-10-16 11:37:13,658 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:13,658 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830052492]
[2020-10-16 11:37:13,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:13,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:13,754 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:13,755 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830052492]
[2020-10-16 11:37:13,755 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262368355]
[2020-10-16 11:37:13,755 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:13,855 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:13,856 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:13,857 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:13,858 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:13,924 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:13,934 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:13,934 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:13,934 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:13,934 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098975150]
[2020-10-16 11:37:13,935 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:13,935 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:13,935 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:13,935 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:13,935 INFO  L87              Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states.
[2020-10-16 11:37:14,077 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:14,077 INFO  L93              Difference]: Finished difference Result 136 states and 319 transitions.
[2020-10-16 11:37:14,077 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:14,077 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:14,078 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:14,079 INFO  L225             Difference]: With dead ends: 136
[2020-10-16 11:37:14,079 INFO  L226             Difference]: Without dead ends: 131
[2020-10-16 11:37:14,079 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:14,080 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2020-10-16 11:37:14,082 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101.
[2020-10-16 11:37:14,082 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-10-16 11:37:14,083 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions.
[2020-10-16 11:37:14,083 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11
[2020-10-16 11:37:14,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:14,084 INFO  L481      AbstractCegarLoop]: Abstraction has 101 states and 245 transitions.
[2020-10-16 11:37:14,084 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:14,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions.
[2020-10-16 11:37:14,085 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:14,085 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:14,085 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:14,286 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2020-10-16 11:37:14,286 INFO  L429      AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:14,286 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:14,286 INFO  L82        PathProgramCache]: Analyzing trace with hash 1037803664, now seen corresponding path program 15 times
[2020-10-16 11:37:14,286 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:14,287 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024001365]
[2020-10-16 11:37:14,287 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:14,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:14,339 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:14,339 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024001365]
[2020-10-16 11:37:14,339 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33164083]
[2020-10-16 11:37:14,340 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:14,378 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:14,378 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:14,379 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:14,380 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:14,433 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:14,433 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:14,433 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:14,433 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834949145]
[2020-10-16 11:37:14,434 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:14,434 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:14,434 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:14,434 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:14,434 INFO  L87              Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states.
[2020-10-16 11:37:14,543 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:14,543 INFO  L93              Difference]: Finished difference Result 130 states and 301 transitions.
[2020-10-16 11:37:14,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:14,545 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:14,545 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:14,546 INFO  L225             Difference]: With dead ends: 130
[2020-10-16 11:37:14,546 INFO  L226             Difference]: Without dead ends: 128
[2020-10-16 11:37:14,547 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182
[2020-10-16 11:37:14,547 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2020-10-16 11:37:14,550 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99.
[2020-10-16 11:37:14,550 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 99 states.
[2020-10-16 11:37:14,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions.
[2020-10-16 11:37:14,551 INFO  L78                 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11
[2020-10-16 11:37:14,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:14,551 INFO  L481      AbstractCegarLoop]: Abstraction has 99 states and 240 transitions.
[2020-10-16 11:37:14,551 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:14,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions.
[2020-10-16 11:37:14,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:14,552 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:14,552 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:14,761 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2020-10-16 11:37:14,762 INFO  L429      AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:14,762 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:14,762 INFO  L82        PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 16 times
[2020-10-16 11:37:14,762 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:14,763 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150712517]
[2020-10-16 11:37:14,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:14,770 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:14,816 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:14,817 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150712517]
[2020-10-16 11:37:14,817 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400787944]
[2020-10-16 11:37:14,818 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:14,868 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:14,869 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:14,869 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:14,874 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:14,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:14,940 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:14,941 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:14,941 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699204908]
[2020-10-16 11:37:14,941 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:14,941 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:14,941 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:14,942 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:14,942 INFO  L87              Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states.
[2020-10-16 11:37:15,080 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:15,080 INFO  L93              Difference]: Finished difference Result 131 states and 303 transitions.
[2020-10-16 11:37:15,081 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:37:15,081 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:15,081 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:15,082 INFO  L225             Difference]: With dead ends: 131
[2020-10-16 11:37:15,082 INFO  L226             Difference]: Without dead ends: 129
[2020-10-16 11:37:15,082 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:37:15,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2020-10-16 11:37:15,085 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101.
[2020-10-16 11:37:15,086 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-10-16 11:37:15,086 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions.
[2020-10-16 11:37:15,086 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11
[2020-10-16 11:37:15,087 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:15,087 INFO  L481      AbstractCegarLoop]: Abstraction has 101 states and 247 transitions.
[2020-10-16 11:37:15,087 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:15,087 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions.
[2020-10-16 11:37:15,087 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:15,088 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:15,088 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:15,288 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2020-10-16 11:37:15,289 INFO  L429      AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:15,289 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:15,289 INFO  L82        PathProgramCache]: Analyzing trace with hash 1038488113, now seen corresponding path program 17 times
[2020-10-16 11:37:15,289 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:15,290 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713725651]
[2020-10-16 11:37:15,290 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:15,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:15,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:15,341 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713725651]
[2020-10-16 11:37:15,341 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499605814]
[2020-10-16 11:37:15,341 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:15,387 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:15,387 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:15,388 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:15,389 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:15,456 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:15,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:15,470 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:15,470 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:15,470 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692341533]
[2020-10-16 11:37:15,471 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:15,471 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:15,471 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:15,472 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:15,472 INFO  L87              Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states.
[2020-10-16 11:37:15,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:15,612 INFO  L93              Difference]: Finished difference Result 131 states and 311 transitions.
[2020-10-16 11:37:15,612 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:15,612 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:15,613 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:15,614 INFO  L225             Difference]: With dead ends: 131
[2020-10-16 11:37:15,614 INFO  L226             Difference]: Without dead ends: 126
[2020-10-16 11:37:15,614 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:15,615 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2020-10-16 11:37:15,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101.
[2020-10-16 11:37:15,618 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-10-16 11:37:15,619 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions.
[2020-10-16 11:37:15,619 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11
[2020-10-16 11:37:15,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:15,619 INFO  L481      AbstractCegarLoop]: Abstraction has 101 states and 247 transitions.
[2020-10-16 11:37:15,619 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:15,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions.
[2020-10-16 11:37:15,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:15,620 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:15,620 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:15,821 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:15,821 INFO  L429      AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:15,821 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:15,821 INFO  L82        PathProgramCache]: Analyzing trace with hash 1038489074, now seen corresponding path program 18 times
[2020-10-16 11:37:15,821 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:15,822 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959184427]
[2020-10-16 11:37:15,822 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:15,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:15,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:15,869 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959184427]
[2020-10-16 11:37:15,869 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756625858]
[2020-10-16 11:37:15,869 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:15,918 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:15,919 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:15,919 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:15,920 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:15,977 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:15,999 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:15,999 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:16,000 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:16,000 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585111572]
[2020-10-16 11:37:16,000 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:16,000 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:16,000 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:16,001 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:16,001 INFO  L87              Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states.
[2020-10-16 11:37:16,213 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:16,214 INFO  L93              Difference]: Finished difference Result 145 states and 339 transitions.
[2020-10-16 11:37:16,214 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:37:16,214 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:16,214 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:16,216 INFO  L225             Difference]: With dead ends: 145
[2020-10-16 11:37:16,216 INFO  L226             Difference]: Without dead ends: 140
[2020-10-16 11:37:16,216 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380
[2020-10-16 11:37:16,217 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2020-10-16 11:37:16,220 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99.
[2020-10-16 11:37:16,220 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 99 states.
[2020-10-16 11:37:16,221 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions.
[2020-10-16 11:37:16,221 INFO  L78                 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11
[2020-10-16 11:37:16,221 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:16,221 INFO  L481      AbstractCegarLoop]: Abstraction has 99 states and 240 transitions.
[2020-10-16 11:37:16,221 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:16,221 INFO  L276                IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions.
[2020-10-16 11:37:16,222 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:16,222 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:16,222 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:16,432 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2020-10-16 11:37:16,433 INFO  L429      AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:16,433 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:16,433 INFO  L82        PathProgramCache]: Analyzing trace with hash 1038517904, now seen corresponding path program 19 times
[2020-10-16 11:37:16,434 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:16,434 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924856728]
[2020-10-16 11:37:16,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:16,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:16,484 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:16,485 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924856728]
[2020-10-16 11:37:16,485 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210512602]
[2020-10-16 11:37:16,485 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:16,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:16,525 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-16 11:37:16,525 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:16,589 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:16,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:16,600 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:16,600 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2020-10-16 11:37:16,600 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389832920]
[2020-10-16 11:37:16,601 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-16 11:37:16,601 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:16,601 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-16 11:37:16,602 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2020-10-16 11:37:16,602 INFO  L87              Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states.
[2020-10-16 11:37:16,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:16,824 INFO  L93              Difference]: Finished difference Result 135 states and 315 transitions.
[2020-10-16 11:37:16,824 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:16,824 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2020-10-16 11:37:16,825 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:16,827 INFO  L225             Difference]: With dead ends: 135
[2020-10-16 11:37:16,827 INFO  L226             Difference]: Without dead ends: 130
[2020-10-16 11:37:16,828 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:16,829 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2020-10-16 11:37:16,833 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98.
[2020-10-16 11:37:16,833 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 98 states.
[2020-10-16 11:37:16,834 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions.
[2020-10-16 11:37:16,834 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11
[2020-10-16 11:37:16,835 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:16,835 INFO  L481      AbstractCegarLoop]: Abstraction has 98 states and 231 transitions.
[2020-10-16 11:37:16,835 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-16 11:37:16,835 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions.
[2020-10-16 11:37:16,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:16,836 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:16,836 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:17,037 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:17,037 INFO  L429      AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:17,037 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:17,038 INFO  L82        PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times
[2020-10-16 11:37:17,038 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:17,038 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905191205]
[2020-10-16 11:37:17,038 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:17,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:17,100 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:17,100 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905191205]
[2020-10-16 11:37:17,100 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309849761]
[2020-10-16 11:37:17,100 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:17,141 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:17,142 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:17,142 INFO  L263         TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:17,148 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:17,220 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:17,239 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:17,239 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:17,239 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12
[2020-10-16 11:37:17,240 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537314113]
[2020-10-16 11:37:17,240 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 11:37:17,240 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:17,240 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 11:37:17,241 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182
[2020-10-16 11:37:17,241 INFO  L87              Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states.
[2020-10-16 11:37:17,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:17,352 INFO  L93              Difference]: Finished difference Result 143 states and 333 transitions.
[2020-10-16 11:37:17,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:17,352 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 11
[2020-10-16 11:37:17,352 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:17,353 INFO  L225             Difference]: With dead ends: 143
[2020-10-16 11:37:17,353 INFO  L226             Difference]: Without dead ends: 138
[2020-10-16 11:37:17,354 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342
[2020-10-16 11:37:17,354 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2020-10-16 11:37:17,357 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105.
[2020-10-16 11:37:17,357 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 105 states.
[2020-10-16 11:37:17,358 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions.
[2020-10-16 11:37:17,358 INFO  L78                 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11
[2020-10-16 11:37:17,358 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:17,358 INFO  L481      AbstractCegarLoop]: Abstraction has 105 states and 257 transitions.
[2020-10-16 11:37:17,358 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 11:37:17,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions.
[2020-10-16 11:37:17,359 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:17,359 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:17,359 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:17,571 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2020-10-16 11:37:17,572 INFO  L429      AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:17,572 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:17,572 INFO  L82        PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 10 times
[2020-10-16 11:37:17,573 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:17,573 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2573910]
[2020-10-16 11:37:17,573 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:17,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:17,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:17,659 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2573910]
[2020-10-16 11:37:17,659 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856016325]
[2020-10-16 11:37:17,659 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:17,704 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:17,704 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:17,705 INFO  L263         TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:17,705 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:17,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:17,795 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:17,795 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:17,796 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079377233]
[2020-10-16 11:37:17,796 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:17,796 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:17,797 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:17,797 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:17,797 INFO  L87              Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states.
[2020-10-16 11:37:17,839 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:17,839 INFO  L93              Difference]: Finished difference Result 132 states and 311 transitions.
[2020-10-16 11:37:17,839 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-16 11:37:17,840 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 11
[2020-10-16 11:37:17,840 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:17,841 INFO  L225             Difference]: With dead ends: 132
[2020-10-16 11:37:17,841 INFO  L226             Difference]: Without dead ends: 129
[2020-10-16 11:37:17,841 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:17,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2020-10-16 11:37:17,844 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110.
[2020-10-16 11:37:17,844 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-10-16 11:37:17,845 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions.
[2020-10-16 11:37:17,845 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11
[2020-10-16 11:37:17,845 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:17,845 INFO  L481      AbstractCegarLoop]: Abstraction has 110 states and 268 transitions.
[2020-10-16 11:37:17,845 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:17,845 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions.
[2020-10-16 11:37:17,846 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:17,846 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:17,846 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:18,054 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2020-10-16 11:37:18,055 INFO  L429      AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:18,055 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:18,055 INFO  L82        PathProgramCache]: Analyzing trace with hash -2014169786, now seen corresponding path program 11 times
[2020-10-16 11:37:18,056 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:18,056 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069347805]
[2020-10-16 11:37:18,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:18,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:18,138 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:18,138 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069347805]
[2020-10-16 11:37:18,138 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354808794]
[2020-10-16 11:37:18,138 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:18,188 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:37:18,188 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:18,189 INFO  L263         TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:18,190 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:18,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:18,275 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:18,275 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:18,275 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682600190]
[2020-10-16 11:37:18,276 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:18,276 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:18,276 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:18,277 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:18,277 INFO  L87              Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states.
[2020-10-16 11:37:18,334 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:18,334 INFO  L93              Difference]: Finished difference Result 143 states and 332 transitions.
[2020-10-16 11:37:18,334 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:18,335 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 11
[2020-10-16 11:37:18,335 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:18,336 INFO  L225             Difference]: With dead ends: 143
[2020-10-16 11:37:18,336 INFO  L226             Difference]: Without dead ends: 140
[2020-10-16 11:37:18,337 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2020-10-16 11:37:18,337 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2020-10-16 11:37:18,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110.
[2020-10-16 11:37:18,340 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-10-16 11:37:18,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions.
[2020-10-16 11:37:18,341 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11
[2020-10-16 11:37:18,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:18,341 INFO  L481      AbstractCegarLoop]: Abstraction has 110 states and 268 transitions.
[2020-10-16 11:37:18,341 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:18,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions.
[2020-10-16 11:37:18,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:18,342 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:18,342 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:18,552 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2020-10-16 11:37:18,552 INFO  L429      AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:18,553 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:18,553 INFO  L82        PathProgramCache]: Analyzing trace with hash -1992720266, now seen corresponding path program 12 times
[2020-10-16 11:37:18,553 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:18,553 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524632276]
[2020-10-16 11:37:18,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:18,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:18,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:18,644 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524632276]
[2020-10-16 11:37:18,644 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125693155]
[2020-10-16 11:37:18,644 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:18,684 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:37:18,684 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:18,685 INFO  L263         TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:18,685 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:18,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:18,778 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:18,778 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:18,778 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383480895]
[2020-10-16 11:37:18,779 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:18,779 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:18,779 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:18,780 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:18,780 INFO  L87              Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states.
[2020-10-16 11:37:18,865 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:18,865 INFO  L93              Difference]: Finished difference Result 142 states and 332 transitions.
[2020-10-16 11:37:18,866 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:18,866 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 11
[2020-10-16 11:37:18,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:18,868 INFO  L225             Difference]: With dead ends: 142
[2020-10-16 11:37:18,868 INFO  L226             Difference]: Without dead ends: 139
[2020-10-16 11:37:18,868 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:18,869 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 139 states.
[2020-10-16 11:37:18,872 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112.
[2020-10-16 11:37:18,872 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 112 states.
[2020-10-16 11:37:18,872 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions.
[2020-10-16 11:37:18,873 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11
[2020-10-16 11:37:18,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:18,873 INFO  L481      AbstractCegarLoop]: Abstraction has 112 states and 275 transitions.
[2020-10-16 11:37:18,873 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:18,873 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions.
[2020-10-16 11:37:18,873 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:18,874 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:18,874 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:19,085 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2020-10-16 11:37:19,085 INFO  L429      AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:19,086 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:19,086 INFO  L82        PathProgramCache]: Analyzing trace with hash -1992028346, now seen corresponding path program 13 times
[2020-10-16 11:37:19,086 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:19,086 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009271386]
[2020-10-16 11:37:19,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:19,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:19,150 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:19,150 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009271386]
[2020-10-16 11:37:19,150 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933111707]
[2020-10-16 11:37:19,150 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:19,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:19,199 INFO  L263         TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:19,200 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:19,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:19,315 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:19,315 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:19,315 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932421603]
[2020-10-16 11:37:19,316 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:19,316 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:19,316 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:19,316 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:19,317 INFO  L87              Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states.
[2020-10-16 11:37:19,419 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:19,419 INFO  L93              Difference]: Finished difference Result 141 states and 332 transitions.
[2020-10-16 11:37:19,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:19,420 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 11
[2020-10-16 11:37:19,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:19,421 INFO  L225             Difference]: With dead ends: 141
[2020-10-16 11:37:19,421 INFO  L226             Difference]: Without dead ends: 138
[2020-10-16 11:37:19,421 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:37:19,422 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2020-10-16 11:37:19,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114.
[2020-10-16 11:37:19,424 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 114 states.
[2020-10-16 11:37:19,425 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions.
[2020-10-16 11:37:19,425 INFO  L78                 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11
[2020-10-16 11:37:19,425 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:19,425 INFO  L481      AbstractCegarLoop]: Abstraction has 114 states and 282 transitions.
[2020-10-16 11:37:19,425 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:19,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions.
[2020-10-16 11:37:19,426 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-10-16 11:37:19,426 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:19,426 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:19,636 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2020-10-16 11:37:19,637 INFO  L429      AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:19,637 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:19,637 INFO  L82        PathProgramCache]: Analyzing trace with hash -1992006026, now seen corresponding path program 14 times
[2020-10-16 11:37:19,638 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:19,638 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124842504]
[2020-10-16 11:37:19,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:19,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:19,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:19,696 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124842504]
[2020-10-16 11:37:19,697 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750082267]
[2020-10-16 11:37:19,697 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:19,759 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:19,759 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:19,760 INFO  L263         TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:19,761 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:19,873 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:19,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:19,890 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:19,890 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:19,890 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297594908]
[2020-10-16 11:37:19,891 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:19,893 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:19,893 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:19,894 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:19,894 INFO  L87              Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states.
[2020-10-16 11:37:20,081 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:20,081 INFO  L93              Difference]: Finished difference Result 150 states and 356 transitions.
[2020-10-16 11:37:20,082 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:20,082 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 11
[2020-10-16 11:37:20,082 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:20,084 INFO  L225             Difference]: With dead ends: 150
[2020-10-16 11:37:20,084 INFO  L226             Difference]: Without dead ends: 144
[2020-10-16 11:37:20,084 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:37:20,085 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2020-10-16 11:37:20,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113.
[2020-10-16 11:37:20,089 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 113 states.
[2020-10-16 11:37:20,090 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions.
[2020-10-16 11:37:20,091 INFO  L78                 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11
[2020-10-16 11:37:20,091 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:20,091 INFO  L481      AbstractCegarLoop]: Abstraction has 113 states and 282 transitions.
[2020-10-16 11:37:20,091 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:20,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions.
[2020-10-16 11:37:20,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:20,092 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:20,092 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:20,301 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:20,301 INFO  L429      AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:20,302 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:20,302 INFO  L82        PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 20 times
[2020-10-16 11:37:20,302 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:20,303 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086290174]
[2020-10-16 11:37:20,303 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:20,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:20,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:20,372 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086290174]
[2020-10-16 11:37:20,372 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462531575]
[2020-10-16 11:37:20,372 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:20,414 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:20,414 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:20,415 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:20,416 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:20,513 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:20,513 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:20,513 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:20,514 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925619366]
[2020-10-16 11:37:20,514 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:20,514 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:20,514 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:20,514 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:20,515 INFO  L87              Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states.
[2020-10-16 11:37:20,585 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:20,585 INFO  L93              Difference]: Finished difference Result 138 states and 332 transitions.
[2020-10-16 11:37:20,585 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-16 11:37:20,586 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:20,586 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:20,587 INFO  L225             Difference]: With dead ends: 138
[2020-10-16 11:37:20,587 INFO  L226             Difference]: Without dead ends: 136
[2020-10-16 11:37:20,587 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:20,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2020-10-16 11:37:20,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117.
[2020-10-16 11:37:20,590 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 117 states.
[2020-10-16 11:37:20,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions.
[2020-10-16 11:37:20,591 INFO  L78                 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12
[2020-10-16 11:37:20,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:20,591 INFO  L481      AbstractCegarLoop]: Abstraction has 117 states and 294 transitions.
[2020-10-16 11:37:20,591 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:20,591 INFO  L276                IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions.
[2020-10-16 11:37:20,592 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:20,592 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:20,592 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:20,800 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2020-10-16 11:37:20,801 INFO  L429      AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:20,801 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:20,801 INFO  L82        PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 21 times
[2020-10-16 11:37:20,801 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:20,801 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061356543]
[2020-10-16 11:37:20,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:20,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:20,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:20,871 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061356543]
[2020-10-16 11:37:20,872 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946745441]
[2020-10-16 11:37:20,872 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:20,939 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:20,939 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:20,941 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:20,942 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:21,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:21,072 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:21,072 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:21,072 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205229085]
[2020-10-16 11:37:21,073 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:21,073 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:21,073 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:21,074 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:21,074 INFO  L87              Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states.
[2020-10-16 11:37:21,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:21,216 INFO  L93              Difference]: Finished difference Result 145 states and 346 transitions.
[2020-10-16 11:37:21,216 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:21,216 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:21,217 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:21,219 INFO  L225             Difference]: With dead ends: 145
[2020-10-16 11:37:21,219 INFO  L226             Difference]: Without dead ends: 143
[2020-10-16 11:37:21,220 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:37:21,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2020-10-16 11:37:21,224 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115.
[2020-10-16 11:37:21,224 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 115 states.
[2020-10-16 11:37:21,225 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions.
[2020-10-16 11:37:21,225 INFO  L78                 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12
[2020-10-16 11:37:21,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:21,225 INFO  L481      AbstractCegarLoop]: Abstraction has 115 states and 288 transitions.
[2020-10-16 11:37:21,225 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:21,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions.
[2020-10-16 11:37:21,226 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:21,226 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:21,226 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:21,438 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2020-10-16 11:37:21,439 INFO  L429      AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:21,439 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:21,439 INFO  L82        PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 22 times
[2020-10-16 11:37:21,439 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:21,439 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474663108]
[2020-10-16 11:37:21,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:21,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:21,509 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:21,509 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474663108]
[2020-10-16 11:37:21,509 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737460524]
[2020-10-16 11:37:21,509 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:21,553 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:21,554 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:21,554 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:21,555 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:21,635 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:21,635 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:21,635 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:21,635 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882386316]
[2020-10-16 11:37:21,636 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:21,636 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:21,636 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:21,636 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:21,636 INFO  L87              Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states.
[2020-10-16 11:37:21,761 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:21,761 INFO  L93              Difference]: Finished difference Result 150 states and 356 transitions.
[2020-10-16 11:37:21,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:21,762 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:21,762 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:21,764 INFO  L225             Difference]: With dead ends: 150
[2020-10-16 11:37:21,764 INFO  L226             Difference]: Without dead ends: 148
[2020-10-16 11:37:21,764 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:21,764 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 148 states.
[2020-10-16 11:37:21,766 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116.
[2020-10-16 11:37:21,766 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2020-10-16 11:37:21,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions.
[2020-10-16 11:37:21,767 INFO  L78                 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12
[2020-10-16 11:37:21,767 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:21,767 INFO  L481      AbstractCegarLoop]: Abstraction has 116 states and 289 transitions.
[2020-10-16 11:37:21,767 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:21,767 INFO  L276                IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions.
[2020-10-16 11:37:21,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:21,768 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:21,768 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:21,976 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:21,977 INFO  L429      AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:21,977 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:21,977 INFO  L82        PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 23 times
[2020-10-16 11:37:21,977 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:21,978 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234344495]
[2020-10-16 11:37:21,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:21,983 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:22,046 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:22,047 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234344495]
[2020-10-16 11:37:22,047 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854570487]
[2020-10-16 11:37:22,047 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:22,099 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:37:22,099 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:22,100 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:22,103 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:22,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:22,198 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:22,198 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:22,198 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758500306]
[2020-10-16 11:37:22,199 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:22,199 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:22,199 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:22,199 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:22,199 INFO  L87              Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states.
[2020-10-16 11:37:22,339 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:22,339 INFO  L93              Difference]: Finished difference Result 148 states and 352 transitions.
[2020-10-16 11:37:22,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:22,340 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:22,340 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:22,341 INFO  L225             Difference]: With dead ends: 148
[2020-10-16 11:37:22,341 INFO  L226             Difference]: Without dead ends: 146
[2020-10-16 11:37:22,341 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:22,342 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2020-10-16 11:37:22,344 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120.
[2020-10-16 11:37:22,344 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 120 states.
[2020-10-16 11:37:22,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions.
[2020-10-16 11:37:22,345 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12
[2020-10-16 11:37:22,345 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:22,345 INFO  L481      AbstractCegarLoop]: Abstraction has 120 states and 299 transitions.
[2020-10-16 11:37:22,345 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:22,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions.
[2020-10-16 11:37:22,346 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:22,346 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:22,346 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:22,554 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41
[2020-10-16 11:37:22,555 INFO  L429      AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:22,555 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:22,555 INFO  L82        PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 24 times
[2020-10-16 11:37:22,556 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:22,556 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007852718]
[2020-10-16 11:37:22,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:22,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:22,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:22,627 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007852718]
[2020-10-16 11:37:22,628 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494468895]
[2020-10-16 11:37:22,628 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:22,667 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:22,668 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:22,669 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:22,669 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:22,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:22,753 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:22,753 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:22,753 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820252385]
[2020-10-16 11:37:22,753 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:22,753 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:22,753 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:22,754 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:22,754 INFO  L87              Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states.
[2020-10-16 11:37:22,882 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:22,882 INFO  L93              Difference]: Finished difference Result 149 states and 354 transitions.
[2020-10-16 11:37:22,883 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:22,883 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:22,883 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:22,884 INFO  L225             Difference]: With dead ends: 149
[2020-10-16 11:37:22,884 INFO  L226             Difference]: Without dead ends: 147
[2020-10-16 11:37:22,887 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:22,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2020-10-16 11:37:22,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118.
[2020-10-16 11:37:22,892 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2020-10-16 11:37:22,893 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions.
[2020-10-16 11:37:22,893 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12
[2020-10-16 11:37:22,893 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:22,895 INFO  L481      AbstractCegarLoop]: Abstraction has 118 states and 293 transitions.
[2020-10-16 11:37:22,895 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:22,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions.
[2020-10-16 11:37:22,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:22,896 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:22,896 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:23,101 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:23,102 INFO  L429      AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:23,102 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:23,102 INFO  L82        PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 25 times
[2020-10-16 11:37:23,103 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:23,103 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517473219]
[2020-10-16 11:37:23,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:23,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:23,211 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:23,211 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517473219]
[2020-10-16 11:37:23,211 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949813457]
[2020-10-16 11:37:23,212 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:23,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:23,251 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:23,252 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:23,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:23,344 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:23,345 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:23,345 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507760006]
[2020-10-16 11:37:23,345 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:23,345 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:23,346 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:23,346 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:23,346 INFO  L87              Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states.
[2020-10-16 11:37:23,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:23,415 INFO  L93              Difference]: Finished difference Result 152 states and 360 transitions.
[2020-10-16 11:37:23,415 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:23,415 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:23,416 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:23,417 INFO  L225             Difference]: With dead ends: 152
[2020-10-16 11:37:23,417 INFO  L226             Difference]: Without dead ends: 150
[2020-10-16 11:37:23,418 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2020-10-16 11:37:23,419 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 150 states.
[2020-10-16 11:37:23,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122.
[2020-10-16 11:37:23,422 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 122 states.
[2020-10-16 11:37:23,422 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions.
[2020-10-16 11:37:23,422 INFO  L78                 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12
[2020-10-16 11:37:23,422 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:23,423 INFO  L481      AbstractCegarLoop]: Abstraction has 122 states and 305 transitions.
[2020-10-16 11:37:23,423 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:23,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions.
[2020-10-16 11:37:23,423 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:23,423 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:23,424 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:23,637 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43
[2020-10-16 11:37:23,638 INFO  L429      AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:23,638 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:23,638 INFO  L82        PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 26 times
[2020-10-16 11:37:23,639 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:23,639 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146301616]
[2020-10-16 11:37:23,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:23,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:23,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:23,714 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146301616]
[2020-10-16 11:37:23,714 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568441917]
[2020-10-16 11:37:23,714 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:23,766 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:23,767 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:23,767 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:23,768 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:23,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:23,879 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:23,879 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:23,880 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885887028]
[2020-10-16 11:37:23,880 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:23,880 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:23,880 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:23,880 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:23,880 INFO  L87              Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states.
[2020-10-16 11:37:24,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:24,015 INFO  L93              Difference]: Finished difference Result 153 states and 361 transitions.
[2020-10-16 11:37:24,018 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:37:24,018 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:24,018 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:24,019 INFO  L225             Difference]: With dead ends: 153
[2020-10-16 11:37:24,019 INFO  L226             Difference]: Without dead ends: 151
[2020-10-16 11:37:24,020 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:24,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2020-10-16 11:37:24,022 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120.
[2020-10-16 11:37:24,023 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 120 states.
[2020-10-16 11:37:24,023 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions.
[2020-10-16 11:37:24,023 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12
[2020-10-16 11:37:24,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:24,024 INFO  L481      AbstractCegarLoop]: Abstraction has 120 states and 299 transitions.
[2020-10-16 11:37:24,024 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:24,024 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions.
[2020-10-16 11:37:24,024 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:24,024 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:24,024 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:24,232 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44
[2020-10-16 11:37:24,233 INFO  L429      AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:24,233 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:24,233 INFO  L82        PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 27 times
[2020-10-16 11:37:24,234 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:24,234 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168137001]
[2020-10-16 11:37:24,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:24,239 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:24,294 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:24,294 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168137001]
[2020-10-16 11:37:24,295 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160902983]
[2020-10-16 11:37:24,295 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:24,332 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:24,332 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:24,332 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:24,333 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:24,429 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:24,429 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:24,429 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:24,429 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562779662]
[2020-10-16 11:37:24,430 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:24,430 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:24,430 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:24,430 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:24,430 INFO  L87              Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states.
[2020-10-16 11:37:24,574 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:24,574 INFO  L93              Difference]: Finished difference Result 156 states and 367 transitions.
[2020-10-16 11:37:24,574 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:37:24,575 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:24,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:24,576 INFO  L225             Difference]: With dead ends: 156
[2020-10-16 11:37:24,576 INFO  L226             Difference]: Without dead ends: 154
[2020-10-16 11:37:24,577 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:37:24,577 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 154 states.
[2020-10-16 11:37:24,580 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119.
[2020-10-16 11:37:24,580 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 119 states.
[2020-10-16 11:37:24,581 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions.
[2020-10-16 11:37:24,581 INFO  L78                 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12
[2020-10-16 11:37:24,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:24,581 INFO  L481      AbstractCegarLoop]: Abstraction has 119 states and 295 transitions.
[2020-10-16 11:37:24,581 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:24,581 INFO  L276                IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions.
[2020-10-16 11:37:24,582 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:24,582 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:24,582 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:24,792 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45
[2020-10-16 11:37:24,793 INFO  L429      AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:24,793 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:24,793 INFO  L82        PathProgramCache]: Analyzing trace with hash 2099068876, now seen corresponding path program 28 times
[2020-10-16 11:37:24,794 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:24,794 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982608247]
[2020-10-16 11:37:24,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:24,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:24,864 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:24,865 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982608247]
[2020-10-16 11:37:24,865 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506555837]
[2020-10-16 11:37:24,865 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:24,913 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:24,913 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:24,913 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:24,914 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:25,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:25,008 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:25,008 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:25,008 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166503744]
[2020-10-16 11:37:25,009 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:25,009 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:25,009 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:25,009 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:25,009 INFO  L87              Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states.
[2020-10-16 11:37:25,089 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:25,089 INFO  L93              Difference]: Finished difference Result 148 states and 351 transitions.
[2020-10-16 11:37:25,090 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:25,090 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:25,090 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:25,091 INFO  L225             Difference]: With dead ends: 148
[2020-10-16 11:37:25,091 INFO  L226             Difference]: Without dead ends: 146
[2020-10-16 11:37:25,092 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:25,092 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2020-10-16 11:37:25,096 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121.
[2020-10-16 11:37:25,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2020-10-16 11:37:25,096 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions.
[2020-10-16 11:37:25,097 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12
[2020-10-16 11:37:25,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:25,097 INFO  L481      AbstractCegarLoop]: Abstraction has 121 states and 301 transitions.
[2020-10-16 11:37:25,097 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:25,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions.
[2020-10-16 11:37:25,098 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:25,098 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:25,098 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:25,309 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46
[2020-10-16 11:37:25,310 INFO  L429      AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:25,310 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:25,310 INFO  L82        PathProgramCache]: Analyzing trace with hash 2099069837, now seen corresponding path program 29 times
[2020-10-16 11:37:25,311 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:25,311 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482596630]
[2020-10-16 11:37:25,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:25,316 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:25,371 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:25,371 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482596630]
[2020-10-16 11:37:25,371 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87705083]
[2020-10-16 11:37:25,372 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:25,419 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:25,420 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:25,420 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:25,421 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:25,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:25,556 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:25,556 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:25,556 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406019196]
[2020-10-16 11:37:25,556 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:25,557 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:25,557 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:25,557 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:25,557 INFO  L87              Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states.
[2020-10-16 11:37:25,711 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:25,711 INFO  L93              Difference]: Finished difference Result 157 states and 368 transitions.
[2020-10-16 11:37:25,711 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:25,712 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:25,712 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:25,713 INFO  L225             Difference]: With dead ends: 157
[2020-10-16 11:37:25,714 INFO  L226             Difference]: Without dead ends: 155
[2020-10-16 11:37:25,714 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:37:25,714 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2020-10-16 11:37:25,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120.
[2020-10-16 11:37:25,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 120 states.
[2020-10-16 11:37:25,717 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions.
[2020-10-16 11:37:25,717 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12
[2020-10-16 11:37:25,718 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:25,718 INFO  L481      AbstractCegarLoop]: Abstraction has 120 states and 297 transitions.
[2020-10-16 11:37:25,718 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:25,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions.
[2020-10-16 11:37:25,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:25,718 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:25,719 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:25,930 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:25,930 INFO  L429      AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:25,931 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:25,931 INFO  L82        PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 30 times
[2020-10-16 11:37:25,931 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:25,931 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884613327]
[2020-10-16 11:37:25,931 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:25,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:25,994 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:25,995 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884613327]
[2020-10-16 11:37:25,995 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747162476]
[2020-10-16 11:37:25,995 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:26,037 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:26,038 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:26,038 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:26,039 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:26,130 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:26,131 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:26,131 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:26,131 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050519947]
[2020-10-16 11:37:26,132 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:26,132 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:26,132 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:26,132 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:26,132 INFO  L87              Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 13 states.
[2020-10-16 11:37:26,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:26,238 INFO  L93              Difference]: Finished difference Result 149 states and 350 transitions.
[2020-10-16 11:37:26,238 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:26,238 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:26,238 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:26,240 INFO  L225             Difference]: With dead ends: 149
[2020-10-16 11:37:26,240 INFO  L226             Difference]: Without dead ends: 147
[2020-10-16 11:37:26,240 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:37:26,241 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2020-10-16 11:37:26,244 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124.
[2020-10-16 11:37:26,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 124 states.
[2020-10-16 11:37:26,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions.
[2020-10-16 11:37:26,244 INFO  L78                 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12
[2020-10-16 11:37:26,245 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:26,245 INFO  L481      AbstractCegarLoop]: Abstraction has 124 states and 303 transitions.
[2020-10-16 11:37:26,245 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:26,245 INFO  L276                IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions.
[2020-10-16 11:37:26,245 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:26,246 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:26,246 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:26,452 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2020-10-16 11:37:26,453 INFO  L429      AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:26,453 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:26,453 INFO  L82        PathProgramCache]: Analyzing trace with hash 2099754286, now seen corresponding path program 31 times
[2020-10-16 11:37:26,454 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:26,454 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987566208]
[2020-10-16 11:37:26,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:26,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:26,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:26,506 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987566208]
[2020-10-16 11:37:26,506 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058464819]
[2020-10-16 11:37:26,506 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:26,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:26,549 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:26,550 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:26,634 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:26,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:26,668 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:26,669 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:26,669 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934591848]
[2020-10-16 11:37:26,669 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:26,669 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:26,669 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:26,670 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:26,670 INFO  L87              Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states.
[2020-10-16 11:37:26,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:26,921 INFO  L93              Difference]: Finished difference Result 164 states and 389 transitions.
[2020-10-16 11:37:26,922 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:26,922 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:26,922 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:26,923 INFO  L225             Difference]: With dead ends: 164
[2020-10-16 11:37:26,923 INFO  L226             Difference]: Without dead ends: 159
[2020-10-16 11:37:26,924 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:26,925 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2020-10-16 11:37:26,926 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122.
[2020-10-16 11:37:26,926 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 122 states.
[2020-10-16 11:37:26,927 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions.
[2020-10-16 11:37:26,927 INFO  L78                 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12
[2020-10-16 11:37:26,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:26,927 INFO  L481      AbstractCegarLoop]: Abstraction has 122 states and 296 transitions.
[2020-10-16 11:37:26,928 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:26,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions.
[2020-10-16 11:37:26,928 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:26,928 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:26,928 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:27,138 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49
[2020-10-16 11:37:27,139 INFO  L429      AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:27,139 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:27,139 INFO  L82        PathProgramCache]: Analyzing trace with hash 2099761757, now seen corresponding path program 32 times
[2020-10-16 11:37:27,140 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:27,140 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099666806]
[2020-10-16 11:37:27,140 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:27,145 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:27,192 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:27,193 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099666806]
[2020-10-16 11:37:27,193 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176221180]
[2020-10-16 11:37:27,193 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:27,233 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:27,233 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:27,234 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:27,234 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:27,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:27,354 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:27,354 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:27,354 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936025017]
[2020-10-16 11:37:27,354 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:27,354 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:27,354 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:27,354 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:27,355 INFO  L87              Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states.
[2020-10-16 11:37:27,533 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:27,534 INFO  L93              Difference]: Finished difference Result 156 states and 367 transitions.
[2020-10-16 11:37:27,534 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:37:27,534 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:27,534 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:27,536 INFO  L225             Difference]: With dead ends: 156
[2020-10-16 11:37:27,536 INFO  L226             Difference]: Without dead ends: 154
[2020-10-16 11:37:27,537 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342
[2020-10-16 11:37:27,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 154 states.
[2020-10-16 11:37:27,539 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124.
[2020-10-16 11:37:27,540 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 124 states.
[2020-10-16 11:37:27,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions.
[2020-10-16 11:37:27,540 INFO  L78                 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12
[2020-10-16 11:37:27,541 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:27,541 INFO  L481      AbstractCegarLoop]: Abstraction has 124 states and 303 transitions.
[2020-10-16 11:37:27,541 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:27,541 INFO  L276                IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions.
[2020-10-16 11:37:27,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:27,542 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:27,542 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:27,752 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:27,752 INFO  L429      AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:27,753 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:27,753 INFO  L82        PathProgramCache]: Analyzing trace with hash 2099783116, now seen corresponding path program 33 times
[2020-10-16 11:37:27,753 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:27,753 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021190070]
[2020-10-16 11:37:27,754 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:27,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:27,805 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:27,806 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021190070]
[2020-10-16 11:37:27,806 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293012730]
[2020-10-16 11:37:27,806 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:27,847 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:27,847 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:27,848 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:27,849 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:27,943 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:27,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:27,978 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:27,978 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:27,978 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071301854]
[2020-10-16 11:37:27,979 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:27,979 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:27,979 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:27,979 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:27,979 INFO  L87              Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states.
[2020-10-16 11:37:28,347 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:28,347 INFO  L93              Difference]: Finished difference Result 176 states and 416 transitions.
[2020-10-16 11:37:28,348 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-16 11:37:28,348 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:28,348 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:28,349 INFO  L225             Difference]: With dead ends: 176
[2020-10-16 11:37:28,349 INFO  L226             Difference]: Without dead ends: 171
[2020-10-16 11:37:28,350 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:37:28,350 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 171 states.
[2020-10-16 11:37:28,353 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124.
[2020-10-16 11:37:28,353 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 124 states.
[2020-10-16 11:37:28,353 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions.
[2020-10-16 11:37:28,354 INFO  L78                 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12
[2020-10-16 11:37:28,354 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:28,354 INFO  L481      AbstractCegarLoop]: Abstraction has 124 states and 303 transitions.
[2020-10-16 11:37:28,354 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:28,354 INFO  L276                IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions.
[2020-10-16 11:37:28,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:28,355 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:28,355 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:28,565 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51
[2020-10-16 11:37:28,565 INFO  L429      AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:28,566 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:28,566 INFO  L82        PathProgramCache]: Analyzing trace with hash 2099784077, now seen corresponding path program 34 times
[2020-10-16 11:37:28,566 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:28,566 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661968100]
[2020-10-16 11:37:28,566 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:28,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:28,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:28,626 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661968100]
[2020-10-16 11:37:28,626 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841282951]
[2020-10-16 11:37:28,626 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:28,671 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:28,671 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:28,672 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:28,673 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:28,750 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:28,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:28,789 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:28,790 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:28,790 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046560915]
[2020-10-16 11:37:28,790 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:28,790 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:28,790 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:28,791 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:28,791 INFO  L87              Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states.
[2020-10-16 11:37:29,050 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:29,050 INFO  L93              Difference]: Finished difference Result 166 states and 393 transitions.
[2020-10-16 11:37:29,051 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:29,051 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:29,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:29,052 INFO  L225             Difference]: With dead ends: 166
[2020-10-16 11:37:29,052 INFO  L226             Difference]: Without dead ends: 161
[2020-10-16 11:37:29,053 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:29,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2020-10-16 11:37:29,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121.
[2020-10-16 11:37:29,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2020-10-16 11:37:29,056 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions.
[2020-10-16 11:37:29,056 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12
[2020-10-16 11:37:29,056 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:29,057 INFO  L481      AbstractCegarLoop]: Abstraction has 121 states and 294 transitions.
[2020-10-16 11:37:29,057 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:29,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions.
[2020-10-16 11:37:29,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:29,057 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:29,057 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:29,267 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:29,267 INFO  L429      AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:29,268 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:29,268 INFO  L82        PathProgramCache]: Analyzing trace with hash 2099992397, now seen corresponding path program 35 times
[2020-10-16 11:37:29,268 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:29,268 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130937183]
[2020-10-16 11:37:29,268 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:29,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:29,323 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:29,323 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130937183]
[2020-10-16 11:37:29,324 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492183585]
[2020-10-16 11:37:29,324 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:29,363 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:29,363 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:29,364 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:29,365 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:29,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:29,480 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:29,480 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:29,480 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343942716]
[2020-10-16 11:37:29,481 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:29,481 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:29,481 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:29,481 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:29,481 INFO  L87              Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states.
[2020-10-16 11:37:29,683 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:29,683 INFO  L93              Difference]: Finished difference Result 163 states and 379 transitions.
[2020-10-16 11:37:29,683 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:29,683 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:29,684 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:29,685 INFO  L225             Difference]: With dead ends: 163
[2020-10-16 11:37:29,685 INFO  L226             Difference]: Without dead ends: 161
[2020-10-16 11:37:29,685 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342
[2020-10-16 11:37:29,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2020-10-16 11:37:29,688 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123.
[2020-10-16 11:37:29,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 123 states.
[2020-10-16 11:37:29,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions.
[2020-10-16 11:37:29,689 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12
[2020-10-16 11:37:29,689 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:29,689 INFO  L481      AbstractCegarLoop]: Abstraction has 123 states and 301 transitions.
[2020-10-16 11:37:29,689 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:29,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions.
[2020-10-16 11:37:29,690 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:29,690 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:29,690 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:29,891 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53
[2020-10-16 11:37:29,891 INFO  L429      AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:29,891 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:29,891 INFO  L82        PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 36 times
[2020-10-16 11:37:29,891 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:29,892 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455554514]
[2020-10-16 11:37:29,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:29,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:29,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:29,946 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455554514]
[2020-10-16 11:37:29,946 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431337213]
[2020-10-16 11:37:29,946 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:29,985 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:29,986 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:29,986 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:29,987 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:30,075 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:30,075 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:30,076 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:30,076 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208843901]
[2020-10-16 11:37:30,076 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:30,077 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:30,077 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:30,077 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:30,077 INFO  L87              Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states.
[2020-10-16 11:37:30,336 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:30,336 INFO  L93              Difference]: Finished difference Result 170 states and 399 transitions.
[2020-10-16 11:37:30,336 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:37:30,337 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:30,337 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:30,338 INFO  L225             Difference]: With dead ends: 170
[2020-10-16 11:37:30,339 INFO  L226             Difference]: Without dead ends: 168
[2020-10-16 11:37:30,339 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:37:30,340 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2020-10-16 11:37:30,342 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125.
[2020-10-16 11:37:30,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2020-10-16 11:37:30,342 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions.
[2020-10-16 11:37:30,342 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12
[2020-10-16 11:37:30,343 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:30,343 INFO  L481      AbstractCegarLoop]: Abstraction has 125 states and 308 transitions.
[2020-10-16 11:37:30,343 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:30,343 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions.
[2020-10-16 11:37:30,343 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:30,343 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:30,343 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:30,544 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:30,544 INFO  L429      AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:30,545 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:30,545 INFO  L82        PathProgramCache]: Analyzing trace with hash 2100676846, now seen corresponding path program 37 times
[2020-10-16 11:37:30,545 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:30,545 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147539479]
[2020-10-16 11:37:30,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:30,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:30,596 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:30,597 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147539479]
[2020-10-16 11:37:30,597 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125491221]
[2020-10-16 11:37:30,597 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:30,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:30,637 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:30,638 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:30,735 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:30,743 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:30,744 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:30,744 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:30,744 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576686891]
[2020-10-16 11:37:30,745 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:30,745 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:30,745 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:30,745 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:30,745 INFO  L87              Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states.
[2020-10-16 11:37:31,033 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:31,034 INFO  L93              Difference]: Finished difference Result 177 states and 424 transitions.
[2020-10-16 11:37:31,034 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:37:31,034 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:31,034 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:31,036 INFO  L225             Difference]: With dead ends: 177
[2020-10-16 11:37:31,036 INFO  L226             Difference]: Without dead ends: 172
[2020-10-16 11:37:31,036 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650
[2020-10-16 11:37:31,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 172 states.
[2020-10-16 11:37:31,040 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126.
[2020-10-16 11:37:31,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 126 states.
[2020-10-16 11:37:31,040 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions.
[2020-10-16 11:37:31,041 INFO  L78                 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12
[2020-10-16 11:37:31,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:31,041 INFO  L481      AbstractCegarLoop]: Abstraction has 126 states and 313 transitions.
[2020-10-16 11:37:31,041 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:31,041 INFO  L276                IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions.
[2020-10-16 11:37:31,042 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:31,042 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:31,042 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:31,253 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2020-10-16 11:37:31,254 INFO  L429      AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:31,254 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:31,254 INFO  L82        PathProgramCache]: Analyzing trace with hash 2100677807, now seen corresponding path program 38 times
[2020-10-16 11:37:31,254 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:31,255 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031902736]
[2020-10-16 11:37:31,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:31,260 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:31,310 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:31,310 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031902736]
[2020-10-16 11:37:31,310 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130600142]
[2020-10-16 11:37:31,310 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:31,355 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:31,355 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:31,356 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:31,357 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:31,445 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:31,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:31,451 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:31,451 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:31,452 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083904178]
[2020-10-16 11:37:31,452 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:31,452 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:31,452 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:31,453 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:31,453 INFO  L87              Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states.
[2020-10-16 11:37:31,831 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:31,831 INFO  L93              Difference]: Finished difference Result 190 states and 454 transitions.
[2020-10-16 11:37:31,832 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-10-16 11:37:31,832 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:31,832 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:31,834 INFO  L225             Difference]: With dead ends: 190
[2020-10-16 11:37:31,834 INFO  L226             Difference]: Without dead ends: 182
[2020-10-16 11:37:31,834 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702
[2020-10-16 11:37:31,835 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2020-10-16 11:37:31,837 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121.
[2020-10-16 11:37:31,837 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2020-10-16 11:37:31,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions.
[2020-10-16 11:37:31,837 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12
[2020-10-16 11:37:31,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:31,837 INFO  L481      AbstractCegarLoop]: Abstraction has 121 states and 297 transitions.
[2020-10-16 11:37:31,838 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:31,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions.
[2020-10-16 11:37:31,838 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:31,838 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:31,838 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:32,039 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2020-10-16 11:37:32,039 INFO  L429      AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:32,040 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:32,040 INFO  L82        PathProgramCache]: Analyzing trace with hash 2100706637, now seen corresponding path program 39 times
[2020-10-16 11:37:32,041 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:32,041 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171693526]
[2020-10-16 11:37:32,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:32,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:32,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:32,091 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171693526]
[2020-10-16 11:37:32,092 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631918554]
[2020-10-16 11:37:32,092 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:32,130 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:37:32,130 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:32,130 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:32,131 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:32,208 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:32,217 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:32,217 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:32,218 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:32,218 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159214924]
[2020-10-16 11:37:32,218 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:32,218 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:32,218 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:32,219 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:32,219 INFO  L87              Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states.
[2020-10-16 11:37:32,555 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:32,556 INFO  L93              Difference]: Finished difference Result 180 states and 427 transitions.
[2020-10-16 11:37:32,556 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:37:32,556 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:32,556 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:32,558 INFO  L225             Difference]: With dead ends: 180
[2020-10-16 11:37:32,558 INFO  L226             Difference]: Without dead ends: 175
[2020-10-16 11:37:32,558 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:37:32,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 175 states.
[2020-10-16 11:37:32,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120.
[2020-10-16 11:37:32,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 120 states.
[2020-10-16 11:37:32,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions.
[2020-10-16 11:37:32,561 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12
[2020-10-16 11:37:32,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:32,561 INFO  L481      AbstractCegarLoop]: Abstraction has 120 states and 292 transitions.
[2020-10-16 11:37:32,561 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:32,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions.
[2020-10-16 11:37:32,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:32,562 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:32,562 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:32,771 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57
[2020-10-16 11:37:32,772 INFO  L429      AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:32,772 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:32,772 INFO  L82        PathProgramCache]: Analyzing trace with hash 2107142237, now seen corresponding path program 40 times
[2020-10-16 11:37:32,772 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:32,773 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828565264]
[2020-10-16 11:37:32,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:32,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:32,838 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:32,838 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828565264]
[2020-10-16 11:37:32,839 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068469764]
[2020-10-16 11:37:32,839 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:32,877 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:32,878 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:32,878 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:32,879 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:32,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:32,971 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:32,971 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:32,972 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915855250]
[2020-10-16 11:37:32,972 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:32,972 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:32,972 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:32,972 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:32,972 INFO  L87              Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states.
[2020-10-16 11:37:33,125 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:33,126 INFO  L93              Difference]: Finished difference Result 164 states and 379 transitions.
[2020-10-16 11:37:33,126 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:33,126 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:33,127 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:33,128 INFO  L225             Difference]: With dead ends: 164
[2020-10-16 11:37:33,128 INFO  L226             Difference]: Without dead ends: 162
[2020-10-16 11:37:33,128 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:37:33,129 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162 states.
[2020-10-16 11:37:33,132 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121.
[2020-10-16 11:37:33,132 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2020-10-16 11:37:33,132 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions.
[2020-10-16 11:37:33,132 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12
[2020-10-16 11:37:33,133 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:33,133 INFO  L481      AbstractCegarLoop]: Abstraction has 121 states and 295 transitions.
[2020-10-16 11:37:33,133 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:33,133 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions.
[2020-10-16 11:37:33,133 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:33,134 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:33,134 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:33,336 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58
[2020-10-16 11:37:33,337 INFO  L429      AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:33,337 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:33,337 INFO  L82        PathProgramCache]: Analyzing trace with hash 2107143198, now seen corresponding path program 41 times
[2020-10-16 11:37:33,338 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:33,338 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85453129]
[2020-10-16 11:37:33,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:33,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:33,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:33,403 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85453129]
[2020-10-16 11:37:33,403 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24366254]
[2020-10-16 11:37:33,404 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:33,443 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:33,444 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:33,444 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:33,445 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:33,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:33,526 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:33,526 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:33,526 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736922709]
[2020-10-16 11:37:33,527 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:33,527 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:33,527 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:33,527 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:33,527 INFO  L87              Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states.
[2020-10-16 11:37:33,696 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:33,696 INFO  L93              Difference]: Finished difference Result 161 states and 372 transitions.
[2020-10-16 11:37:33,697 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:37:33,697 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:33,697 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:33,698 INFO  L225             Difference]: With dead ends: 161
[2020-10-16 11:37:33,698 INFO  L226             Difference]: Without dead ends: 159
[2020-10-16 11:37:33,699 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:37:33,699 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2020-10-16 11:37:33,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118.
[2020-10-16 11:37:33,702 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2020-10-16 11:37:33,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions.
[2020-10-16 11:37:33,703 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12
[2020-10-16 11:37:33,703 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:33,703 INFO  L481      AbstractCegarLoop]: Abstraction has 118 states and 287 transitions.
[2020-10-16 11:37:33,703 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:33,704 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions.
[2020-10-16 11:37:33,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:33,704 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:33,704 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:33,915 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2020-10-16 11:37:33,916 INFO  L429      AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:33,916 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:33,916 INFO  L82        PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 42 times
[2020-10-16 11:37:33,917 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:33,917 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056251855]
[2020-10-16 11:37:33,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:33,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:33,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:33,968 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056251855]
[2020-10-16 11:37:33,969 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355216484]
[2020-10-16 11:37:33,969 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:34,014 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:37:34,014 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:34,015 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:34,015 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:34,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:34,121 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:34,121 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:34,121 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499088072]
[2020-10-16 11:37:34,121 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:34,122 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:34,122 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:34,122 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:34,122 INFO  L87              Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states.
[2020-10-16 11:37:34,316 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:34,316 INFO  L93              Difference]: Finished difference Result 165 states and 380 transitions.
[2020-10-16 11:37:34,317 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:37:34,317 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:34,317 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:34,319 INFO  L225             Difference]: With dead ends: 165
[2020-10-16 11:37:34,319 INFO  L226             Difference]: Without dead ends: 163
[2020-10-16 11:37:34,319 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380
[2020-10-16 11:37:34,320 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163 states.
[2020-10-16 11:37:34,322 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118.
[2020-10-16 11:37:34,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2020-10-16 11:37:34,323 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions.
[2020-10-16 11:37:34,323 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12
[2020-10-16 11:37:34,323 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:34,323 INFO  L481      AbstractCegarLoop]: Abstraction has 118 states and 290 transitions.
[2020-10-16 11:37:34,323 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:34,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions.
[2020-10-16 11:37:34,324 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:34,324 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:34,324 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:34,525 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60
[2020-10-16 11:37:34,525 INFO  L429      AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:34,526 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:34,526 INFO  L82        PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 43 times
[2020-10-16 11:37:34,526 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:34,526 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737964054]
[2020-10-16 11:37:34,527 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:34,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:34,576 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:34,577 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737964054]
[2020-10-16 11:37:34,577 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346845222]
[2020-10-16 11:37:34,577 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:34,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:34,622 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:34,622 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:34,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:34,714 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:34,714 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:34,714 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967720032]
[2020-10-16 11:37:34,714 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:34,714 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:34,715 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:34,715 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:34,715 INFO  L87              Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states.
[2020-10-16 11:37:34,892 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:34,892 INFO  L93              Difference]: Finished difference Result 167 states and 384 transitions.
[2020-10-16 11:37:34,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:37:34,893 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:34,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:34,894 INFO  L225             Difference]: With dead ends: 167
[2020-10-16 11:37:34,894 INFO  L226             Difference]: Without dead ends: 165
[2020-10-16 11:37:34,895 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380
[2020-10-16 11:37:34,895 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2020-10-16 11:37:34,897 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118.
[2020-10-16 11:37:34,897 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2020-10-16 11:37:34,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions.
[2020-10-16 11:37:34,898 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12
[2020-10-16 11:37:34,898 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:34,898 INFO  L481      AbstractCegarLoop]: Abstraction has 118 states and 289 transitions.
[2020-10-16 11:37:34,898 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:34,898 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions.
[2020-10-16 11:37:34,899 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:34,899 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:34,899 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:35,108 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:35,109 INFO  L429      AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:35,109 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:35,109 INFO  L82        PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 44 times
[2020-10-16 11:37:35,109 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:35,110 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329225099]
[2020-10-16 11:37:35,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:35,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:35,167 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:35,167 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329225099]
[2020-10-16 11:37:35,167 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740555200]
[2020-10-16 11:37:35,167 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:35,207 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:35,207 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:35,208 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:35,208 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:35,294 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:35,295 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:35,295 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:35,295 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986968118]
[2020-10-16 11:37:35,295 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:35,295 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:35,296 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:35,296 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:35,296 INFO  L87              Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states.
[2020-10-16 11:37:35,556 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:35,557 INFO  L93              Difference]: Finished difference Result 168 states and 392 transitions.
[2020-10-16 11:37:35,557 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-16 11:37:35,557 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:35,558 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:35,559 INFO  L225             Difference]: With dead ends: 168
[2020-10-16 11:37:35,559 INFO  L226             Difference]: Without dead ends: 166
[2020-10-16 11:37:35,560 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:37:35,560 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166 states.
[2020-10-16 11:37:35,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120.
[2020-10-16 11:37:35,563 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 120 states.
[2020-10-16 11:37:35,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions.
[2020-10-16 11:37:35,563 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12
[2020-10-16 11:37:35,564 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:35,564 INFO  L481      AbstractCegarLoop]: Abstraction has 120 states and 296 transitions.
[2020-10-16 11:37:35,564 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:35,564 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions.
[2020-10-16 11:37:35,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:35,564 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:35,565 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:35,772 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:35,773 INFO  L429      AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:35,773 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:35,773 INFO  L82        PathProgramCache]: Analyzing trace with hash 2128382476, now seen corresponding path program 45 times
[2020-10-16 11:37:35,774 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:35,774 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376292169]
[2020-10-16 11:37:35,774 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:35,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:35,831 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:35,831 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376292169]
[2020-10-16 11:37:35,832 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526364184]
[2020-10-16 11:37:35,832 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:35,872 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:35,873 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:35,873 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:35,874 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:35,948 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:35,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:35,957 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:35,957 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:35,958 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135536464]
[2020-10-16 11:37:35,958 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:35,958 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:35,959 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:35,959 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:35,959 INFO  L87              Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states.
[2020-10-16 11:37:36,155 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:36,156 INFO  L93              Difference]: Finished difference Result 160 states and 384 transitions.
[2020-10-16 11:37:36,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:36,156 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:36,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:36,157 INFO  L225             Difference]: With dead ends: 160
[2020-10-16 11:37:36,158 INFO  L226             Difference]: Without dead ends: 155
[2020-10-16 11:37:36,158 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:36,158 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2020-10-16 11:37:36,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121.
[2020-10-16 11:37:36,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2020-10-16 11:37:36,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions.
[2020-10-16 11:37:36,160 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12
[2020-10-16 11:37:36,161 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:36,161 INFO  L481      AbstractCegarLoop]: Abstraction has 121 states and 301 transitions.
[2020-10-16 11:37:36,161 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:36,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions.
[2020-10-16 11:37:36,161 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:36,161 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:36,162 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:36,362 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:36,362 INFO  L429      AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:36,363 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:36,363 INFO  L82        PathProgramCache]: Analyzing trace with hash 2128383437, now seen corresponding path program 46 times
[2020-10-16 11:37:36,363 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:36,364 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238604980]
[2020-10-16 11:37:36,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:36,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:36,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:36,418 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238604980]
[2020-10-16 11:37:36,418 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744466607]
[2020-10-16 11:37:36,418 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:36,461 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:36,461 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:36,462 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:36,463 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:36,572 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:36,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:36,609 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:36,609 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:36,610 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567828282]
[2020-10-16 11:37:36,610 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:36,610 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:36,611 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:36,611 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:36,611 INFO  L87              Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states.
[2020-10-16 11:37:37,028 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:37,028 INFO  L93              Difference]: Finished difference Result 189 states and 444 transitions.
[2020-10-16 11:37:37,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:37:37,029 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:37,029 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:37,031 INFO  L225             Difference]: With dead ends: 189
[2020-10-16 11:37:37,031 INFO  L226             Difference]: Without dead ends: 181
[2020-10-16 11:37:37,031 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:37:37,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 181 states.
[2020-10-16 11:37:37,035 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118.
[2020-10-16 11:37:37,036 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2020-10-16 11:37:37,036 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions.
[2020-10-16 11:37:37,037 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12
[2020-10-16 11:37:37,037 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:37,038 INFO  L481      AbstractCegarLoop]: Abstraction has 118 states and 289 transitions.
[2020-10-16 11:37:37,038 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:37,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions.
[2020-10-16 11:37:37,039 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:37,039 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:37,039 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:37,252 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:37,252 INFO  L429      AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:37,253 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:37,253 INFO  L82        PathProgramCache]: Analyzing trace with hash 2128390908, now seen corresponding path program 47 times
[2020-10-16 11:37:37,253 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:37,253 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966757495]
[2020-10-16 11:37:37,254 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:37,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:37,321 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:37,322 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966757495]
[2020-10-16 11:37:37,322 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41828060]
[2020-10-16 11:37:37,322 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:37,365 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:37,365 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:37,366 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:37,366 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:37,445 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:37,446 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:37,446 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:37,446 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486108596]
[2020-10-16 11:37:37,446 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:37,447 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:37,447 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:37,449 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:37,450 INFO  L87              Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states.
[2020-10-16 11:37:37,711 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:37,712 INFO  L93              Difference]: Finished difference Result 169 states and 393 transitions.
[2020-10-16 11:37:37,712 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-16 11:37:37,712 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:37,712 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:37,713 INFO  L225             Difference]: With dead ends: 169
[2020-10-16 11:37:37,714 INFO  L226             Difference]: Without dead ends: 167
[2020-10-16 11:37:37,714 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:37:37,714 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2020-10-16 11:37:37,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120.
[2020-10-16 11:37:37,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 120 states.
[2020-10-16 11:37:37,717 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions.
[2020-10-16 11:37:37,717 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12
[2020-10-16 11:37:37,718 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:37,718 INFO  L481      AbstractCegarLoop]: Abstraction has 120 states and 296 transitions.
[2020-10-16 11:37:37,718 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:37,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions.
[2020-10-16 11:37:37,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:37,718 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:37,719 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:37,921 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2020-10-16 11:37:37,921 INFO  L429      AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:37,922 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:37,922 INFO  L82        PathProgramCache]: Analyzing trace with hash 2128412267, now seen corresponding path program 48 times
[2020-10-16 11:37:37,922 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:37,922 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070125143]
[2020-10-16 11:37:37,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:37,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:37,982 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:37,983 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070125143]
[2020-10-16 11:37:37,983 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144736149]
[2020-10-16 11:37:37,983 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:38,022 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:38,022 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:38,023 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:38,024 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:38,091 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:38,103 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:38,104 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:38,104 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:38,104 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102728339]
[2020-10-16 11:37:38,104 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:38,104 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:38,104 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:38,105 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:38,105 INFO  L87              Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states.
[2020-10-16 11:37:38,454 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:38,454 INFO  L93              Difference]: Finished difference Result 192 states and 454 transitions.
[2020-10-16 11:37:38,455 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-10-16 11:37:38,455 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:38,455 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:38,457 INFO  L225             Difference]: With dead ends: 192
[2020-10-16 11:37:38,457 INFO  L226             Difference]: Without dead ends: 184
[2020-10-16 11:37:38,457 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702
[2020-10-16 11:37:38,458 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 184 states.
[2020-10-16 11:37:38,459 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119.
[2020-10-16 11:37:38,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 119 states.
[2020-10-16 11:37:38,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions.
[2020-10-16 11:37:38,460 INFO  L78                 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12
[2020-10-16 11:37:38,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:38,460 INFO  L481      AbstractCegarLoop]: Abstraction has 119 states and 287 transitions.
[2020-10-16 11:37:38,461 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:38,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions.
[2020-10-16 11:37:38,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:38,461 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:38,461 INFO  L422         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:38,669 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:38,670 INFO  L429      AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:38,670 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:38,670 INFO  L82        PathProgramCache]: Analyzing trace with hash 2128413228, now seen corresponding path program 49 times
[2020-10-16 11:37:38,671 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:38,671 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926686463]
[2020-10-16 11:37:38,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:38,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:38,739 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:38,739 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926686463]
[2020-10-16 11:37:38,739 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992821837]
[2020-10-16 11:37:38,740 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:38,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:38,780 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-16 11:37:38,780 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:38,848 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:38,861 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:38,862 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:38,862 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2020-10-16 11:37:38,862 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787478382]
[2020-10-16 11:37:38,862 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:37:38,862 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:38,863 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:37:38,863 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:37:38,863 INFO  L87              Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states.
[2020-10-16 11:37:39,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:39,206 INFO  L93              Difference]: Finished difference Result 180 states and 420 transitions.
[2020-10-16 11:37:39,207 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:37:39,207 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 12
[2020-10-16 11:37:39,207 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:39,208 INFO  L225             Difference]: With dead ends: 180
[2020-10-16 11:37:39,208 INFO  L226             Difference]: Without dead ends: 175
[2020-10-16 11:37:39,209 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650
[2020-10-16 11:37:39,209 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 175 states.
[2020-10-16 11:37:39,211 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114.
[2020-10-16 11:37:39,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 114 states.
[2020-10-16 11:37:39,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions.
[2020-10-16 11:37:39,212 INFO  L78                 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12
[2020-10-16 11:37:39,212 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:39,212 INFO  L481      AbstractCegarLoop]: Abstraction has 114 states and 268 transitions.
[2020-10-16 11:37:39,212 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:37:39,212 INFO  L276                IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions.
[2020-10-16 11:37:39,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:39,213 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:39,213 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:39,415 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67
[2020-10-16 11:37:39,416 INFO  L429      AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:39,416 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:39,416 INFO  L82        PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times
[2020-10-16 11:37:39,417 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:39,417 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248292123]
[2020-10-16 11:37:39,417 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:39,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:39,488 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:39,488 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248292123]
[2020-10-16 11:37:39,488 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008933509]
[2020-10-16 11:37:39,488 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:39,535 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:37:39,535 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:39,536 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:39,537 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:39,650 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:39,672 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:39,672 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:39,672 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14
[2020-10-16 11:37:39,673 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361586467]
[2020-10-16 11:37:39,673 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 11:37:39,673 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:39,673 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 11:37:39,673 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:37:39,674 INFO  L87              Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states.
[2020-10-16 11:37:39,818 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:39,818 INFO  L93              Difference]: Finished difference Result 164 states and 382 transitions.
[2020-10-16 11:37:39,819 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:37:39,819 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 12
[2020-10-16 11:37:39,819 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:39,820 INFO  L225             Difference]: With dead ends: 164
[2020-10-16 11:37:39,820 INFO  L226             Difference]: Without dead ends: 159
[2020-10-16 11:37:39,821 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:37:39,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2020-10-16 11:37:39,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122.
[2020-10-16 11:37:39,823 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 122 states.
[2020-10-16 11:37:39,824 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions.
[2020-10-16 11:37:39,824 INFO  L78                 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12
[2020-10-16 11:37:39,824 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:39,824 INFO  L481      AbstractCegarLoop]: Abstraction has 122 states and 299 transitions.
[2020-10-16 11:37:39,825 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 11:37:39,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions.
[2020-10-16 11:37:39,825 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:39,825 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:39,825 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:40,035 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:40,036 INFO  L429      AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:40,036 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:40,036 INFO  L82        PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 15 times
[2020-10-16 11:37:40,036 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:40,036 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058698347]
[2020-10-16 11:37:40,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:40,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:40,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:40,148 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058698347]
[2020-10-16 11:37:40,148 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458153207]
[2020-10-16 11:37:40,148 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:40,187 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:37:40,187 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:40,188 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:40,189 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:40,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:40,317 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:40,317 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:40,317 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903922039]
[2020-10-16 11:37:40,317 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:40,318 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:40,318 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:40,318 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:40,318 INFO  L87              Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states.
[2020-10-16 11:37:40,366 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:40,366 INFO  L93              Difference]: Finished difference Result 156 states and 367 transitions.
[2020-10-16 11:37:40,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:40,367 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 12
[2020-10-16 11:37:40,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:40,368 INFO  L225             Difference]: With dead ends: 156
[2020-10-16 11:37:40,368 INFO  L226             Difference]: Without dead ends: 153
[2020-10-16 11:37:40,369 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:40,369 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2020-10-16 11:37:40,372 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129.
[2020-10-16 11:37:40,372 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 129 states.
[2020-10-16 11:37:40,372 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions.
[2020-10-16 11:37:40,372 INFO  L78                 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12
[2020-10-16 11:37:40,372 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:40,373 INFO  L481      AbstractCegarLoop]: Abstraction has 129 states and 315 transitions.
[2020-10-16 11:37:40,373 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:40,373 INFO  L276                IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions.
[2020-10-16 11:37:40,373 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:40,373 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:40,373 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:40,574 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69
[2020-10-16 11:37:40,574 INFO  L429      AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:40,574 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:40,575 INFO  L82        PathProgramCache]: Analyzing trace with hash 1985246760, now seen corresponding path program 16 times
[2020-10-16 11:37:40,575 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:40,575 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137851033]
[2020-10-16 11:37:40,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:40,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:40,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:40,674 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137851033]
[2020-10-16 11:37:40,675 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591541476]
[2020-10-16 11:37:40,675 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:40,716 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:40,716 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:40,717 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:40,717 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:40,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:40,838 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:40,838 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:40,838 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427575801]
[2020-10-16 11:37:40,839 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:40,839 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:40,839 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:40,839 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:40,839 INFO  L87              Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states.
[2020-10-16 11:37:40,902 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:40,902 INFO  L93              Difference]: Finished difference Result 170 states and 394 transitions.
[2020-10-16 11:37:40,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:40,903 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 12
[2020-10-16 11:37:40,903 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:40,904 INFO  L225             Difference]: With dead ends: 170
[2020-10-16 11:37:40,904 INFO  L226             Difference]: Without dead ends: 167
[2020-10-16 11:37:40,905 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:37:40,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2020-10-16 11:37:40,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129.
[2020-10-16 11:37:40,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 129 states.
[2020-10-16 11:37:40,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions.
[2020-10-16 11:37:40,909 INFO  L78                 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12
[2020-10-16 11:37:40,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:40,909 INFO  L481      AbstractCegarLoop]: Abstraction has 129 states and 315 transitions.
[2020-10-16 11:37:40,909 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:40,909 INFO  L276                IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions.
[2020-10-16 11:37:40,910 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:40,910 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:40,910 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:41,110 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:41,111 INFO  L429      AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:41,111 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:41,111 INFO  L82        PathProgramCache]: Analyzing trace with hash -1644785416, now seen corresponding path program 17 times
[2020-10-16 11:37:41,111 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:41,111 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562423355]
[2020-10-16 11:37:41,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:41,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:41,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:41,209 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562423355]
[2020-10-16 11:37:41,209 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654495358]
[2020-10-16 11:37:41,209 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:41,248 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:37:41,248 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:41,249 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:41,250 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:41,377 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:41,378 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:41,378 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:41,378 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025491821]
[2020-10-16 11:37:41,379 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:41,379 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:41,379 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:41,380 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:41,380 INFO  L87              Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states.
[2020-10-16 11:37:41,467 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:41,467 INFO  L93              Difference]: Finished difference Result 169 states and 394 transitions.
[2020-10-16 11:37:41,467 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:41,468 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 12
[2020-10-16 11:37:41,468 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:41,469 INFO  L225             Difference]: With dead ends: 169
[2020-10-16 11:37:41,469 INFO  L226             Difference]: Without dead ends: 166
[2020-10-16 11:37:41,469 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:41,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166 states.
[2020-10-16 11:37:41,472 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130.
[2020-10-16 11:37:41,472 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 130 states.
[2020-10-16 11:37:41,473 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions.
[2020-10-16 11:37:41,473 INFO  L78                 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12
[2020-10-16 11:37:41,473 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:41,473 INFO  L481      AbstractCegarLoop]: Abstraction has 130 states and 320 transitions.
[2020-10-16 11:37:41,473 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:41,473 INFO  L276                IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions.
[2020-10-16 11:37:41,474 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:41,474 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:41,474 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:41,681 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:41,681 INFO  L429      AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:41,682 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:41,682 INFO  L82        PathProgramCache]: Analyzing trace with hash -1623335896, now seen corresponding path program 18 times
[2020-10-16 11:37:41,682 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:41,683 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510213261]
[2020-10-16 11:37:41,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:41,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:41,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:41,769 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510213261]
[2020-10-16 11:37:41,770 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033505296]
[2020-10-16 11:37:41,770 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:41,814 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:37:41,815 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:41,815 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:41,816 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:41,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:41,933 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:41,933 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:41,933 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128266201]
[2020-10-16 11:37:41,933 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:41,934 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:41,934 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:41,934 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:41,934 INFO  L87              Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states.
[2020-10-16 11:37:42,046 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:42,046 INFO  L93              Difference]: Finished difference Result 168 states and 394 transitions.
[2020-10-16 11:37:42,047 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:37:42,047 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 12
[2020-10-16 11:37:42,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:42,048 INFO  L225             Difference]: With dead ends: 168
[2020-10-16 11:37:42,049 INFO  L226             Difference]: Without dead ends: 165
[2020-10-16 11:37:42,049 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:37:42,049 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2020-10-16 11:37:42,052 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132.
[2020-10-16 11:37:42,052 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 132 states.
[2020-10-16 11:37:42,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions.
[2020-10-16 11:37:42,053 INFO  L78                 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12
[2020-10-16 11:37:42,053 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:42,053 INFO  L481      AbstractCegarLoop]: Abstraction has 132 states and 327 transitions.
[2020-10-16 11:37:42,053 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:42,053 INFO  L276                IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions.
[2020-10-16 11:37:42,053 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:42,053 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:42,054 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:42,262 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72
[2020-10-16 11:37:42,263 INFO  L429      AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:42,263 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:42,263 INFO  L82        PathProgramCache]: Analyzing trace with hash -1622643976, now seen corresponding path program 19 times
[2020-10-16 11:37:42,263 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:42,264 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141686506]
[2020-10-16 11:37:42,264 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:42,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:42,347 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:42,347 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141686506]
[2020-10-16 11:37:42,347 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168095193]
[2020-10-16 11:37:42,347 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:42,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:42,387 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:42,388 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:42,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:42,509 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:42,509 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:42,509 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254520872]
[2020-10-16 11:37:42,509 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:42,510 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:42,510 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:42,510 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:42,510 INFO  L87              Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states.
[2020-10-16 11:37:42,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:42,652 INFO  L93              Difference]: Finished difference Result 167 states and 394 transitions.
[2020-10-16 11:37:42,652 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:42,652 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 12
[2020-10-16 11:37:42,652 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:42,654 INFO  L225             Difference]: With dead ends: 167
[2020-10-16 11:37:42,654 INFO  L226             Difference]: Without dead ends: 164
[2020-10-16 11:37:42,654 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2020-10-16 11:37:42,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 164 states.
[2020-10-16 11:37:42,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134.
[2020-10-16 11:37:42,658 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 134 states.
[2020-10-16 11:37:42,658 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions.
[2020-10-16 11:37:42,658 INFO  L78                 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12
[2020-10-16 11:37:42,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:42,658 INFO  L481      AbstractCegarLoop]: Abstraction has 134 states and 334 transitions.
[2020-10-16 11:37:42,659 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:42,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions.
[2020-10-16 11:37:42,659 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-16 11:37:42,659 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:42,659 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:42,868 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:42,869 INFO  L429      AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:42,869 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:42,869 INFO  L82        PathProgramCache]: Analyzing trace with hash -1622621656, now seen corresponding path program 20 times
[2020-10-16 11:37:42,870 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:42,870 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091026565]
[2020-10-16 11:37:42,870 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:42,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:42,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:42,943 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091026565]
[2020-10-16 11:37:42,943 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199575159]
[2020-10-16 11:37:42,943 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:42,980 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:42,980 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:42,981 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:42,982 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:43,085 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:43,103 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:43,103 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:43,103 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:43,104 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761065445]
[2020-10-16 11:37:43,104 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:43,104 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:43,104 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:43,104 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:43,105 INFO  L87              Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states.
[2020-10-16 11:37:43,321 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:43,321 INFO  L93              Difference]: Finished difference Result 176 states and 418 transitions.
[2020-10-16 11:37:43,322 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:37:43,322 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 12
[2020-10-16 11:37:43,323 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:43,324 INFO  L225             Difference]: With dead ends: 176
[2020-10-16 11:37:43,324 INFO  L226             Difference]: Without dead ends: 170
[2020-10-16 11:37:43,325 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:43,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 170 states.
[2020-10-16 11:37:43,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132.
[2020-10-16 11:37:43,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 132 states.
[2020-10-16 11:37:43,330 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions.
[2020-10-16 11:37:43,330 INFO  L78                 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12
[2020-10-16 11:37:43,330 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:43,330 INFO  L481      AbstractCegarLoop]: Abstraction has 132 states and 332 transitions.
[2020-10-16 11:37:43,330 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:43,331 INFO  L276                IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions.
[2020-10-16 11:37:43,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:43,331 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:43,331 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:43,543 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:43,543 INFO  L429      AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:43,544 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:43,544 INFO  L82        PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 50 times
[2020-10-16 11:37:43,544 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:43,545 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593398134]
[2020-10-16 11:37:43,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:43,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:43,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:43,684 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593398134]
[2020-10-16 11:37:43,684 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449259566]
[2020-10-16 11:37:43,684 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:43,746 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:43,747 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:43,748 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:43,749 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:43,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:43,919 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:43,920 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:43,920 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103723347]
[2020-10-16 11:37:43,920 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:43,921 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:43,924 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:43,924 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:43,925 INFO  L87              Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states.
[2020-10-16 11:37:43,994 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:43,994 INFO  L93              Difference]: Finished difference Result 163 states and 394 transitions.
[2020-10-16 11:37:43,995 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:37:43,995 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:43,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:43,997 INFO  L225             Difference]: With dead ends: 163
[2020-10-16 11:37:43,997 INFO  L226             Difference]: Without dead ends: 161
[2020-10-16 11:37:43,998 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:43,998 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2020-10-16 11:37:44,002 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138.
[2020-10-16 11:37:44,002 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 138 states.
[2020-10-16 11:37:44,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions.
[2020-10-16 11:37:44,003 INFO  L78                 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13
[2020-10-16 11:37:44,003 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:44,003 INFO  L481      AbstractCegarLoop]: Abstraction has 138 states and 350 transitions.
[2020-10-16 11:37:44,004 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:44,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions.
[2020-10-16 11:37:44,004 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:44,005 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:44,005 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:44,218 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75
[2020-10-16 11:37:44,218 INFO  L429      AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:44,219 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:44,219 INFO  L82        PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 51 times
[2020-10-16 11:37:44,220 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:44,220 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835802320]
[2020-10-16 11:37:44,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:44,227 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:44,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:44,342 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835802320]
[2020-10-16 11:37:44,342 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332014043]
[2020-10-16 11:37:44,342 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:44,407 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:44,408 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:44,409 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:44,410 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:44,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:44,602 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:44,602 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:44,603 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077326063]
[2020-10-16 11:37:44,603 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:44,603 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:44,604 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:44,604 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:44,604 INFO  L87              Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states.
[2020-10-16 11:37:44,748 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:44,748 INFO  L93              Difference]: Finished difference Result 172 states and 412 transitions.
[2020-10-16 11:37:44,749 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:44,749 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:44,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:44,750 INFO  L225             Difference]: With dead ends: 172
[2020-10-16 11:37:44,750 INFO  L226             Difference]: Without dead ends: 170
[2020-10-16 11:37:44,751 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342
[2020-10-16 11:37:44,751 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 170 states.
[2020-10-16 11:37:44,753 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136.
[2020-10-16 11:37:44,753 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 136 states.
[2020-10-16 11:37:44,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions.
[2020-10-16 11:37:44,754 INFO  L78                 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13
[2020-10-16 11:37:44,754 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:44,754 INFO  L481      AbstractCegarLoop]: Abstraction has 136 states and 344 transitions.
[2020-10-16 11:37:44,754 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:44,754 INFO  L276                IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions.
[2020-10-16 11:37:44,755 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:44,755 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:44,755 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:44,965 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:44,965 INFO  L429      AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:44,966 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:44,966 INFO  L82        PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 52 times
[2020-10-16 11:37:44,966 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:44,966 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861501423]
[2020-10-16 11:37:44,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:44,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:45,046 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:45,047 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861501423]
[2020-10-16 11:37:45,047 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503736357]
[2020-10-16 11:37:45,047 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:45,107 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:45,107 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:45,108 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:45,109 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:45,288 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:45,288 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:45,288 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:45,288 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291509143]
[2020-10-16 11:37:45,289 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:45,289 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:45,289 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:45,289 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:45,289 INFO  L87              Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states.
[2020-10-16 11:37:45,474 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:45,474 INFO  L93              Difference]: Finished difference Result 179 states and 426 transitions.
[2020-10-16 11:37:45,474 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:45,475 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:45,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:45,476 INFO  L225             Difference]: With dead ends: 179
[2020-10-16 11:37:45,476 INFO  L226             Difference]: Without dead ends: 177
[2020-10-16 11:37:45,477 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380
[2020-10-16 11:37:45,479 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2020-10-16 11:37:45,481 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134.
[2020-10-16 11:37:45,481 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 134 states.
[2020-10-16 11:37:45,482 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions.
[2020-10-16 11:37:45,482 INFO  L78                 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13
[2020-10-16 11:37:45,482 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:45,482 INFO  L481      AbstractCegarLoop]: Abstraction has 134 states and 338 transitions.
[2020-10-16 11:37:45,482 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:45,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions.
[2020-10-16 11:37:45,483 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:45,483 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:45,483 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:45,692 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77
[2020-10-16 11:37:45,693 INFO  L429      AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:45,693 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:45,693 INFO  L82        PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 53 times
[2020-10-16 11:37:45,694 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:45,694 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106209270]
[2020-10-16 11:37:45,694 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:45,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:45,771 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:45,771 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106209270]
[2020-10-16 11:37:45,771 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182124547]
[2020-10-16 11:37:45,771 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:45,811 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:45,812 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:45,812 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:45,813 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:45,931 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:45,931 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:45,931 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:45,932 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484466593]
[2020-10-16 11:37:45,932 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:45,932 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:45,932 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:45,932 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:45,932 INFO  L87              Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states.
[2020-10-16 11:37:46,124 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:46,124 INFO  L93              Difference]: Finished difference Result 179 states and 426 transitions.
[2020-10-16 11:37:46,125 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:37:46,125 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:46,125 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:46,127 INFO  L225             Difference]: With dead ends: 179
[2020-10-16 11:37:46,127 INFO  L226             Difference]: Without dead ends: 177
[2020-10-16 11:37:46,127 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:46,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2020-10-16 11:37:46,129 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136.
[2020-10-16 11:37:46,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 136 states.
[2020-10-16 11:37:46,129 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions.
[2020-10-16 11:37:46,129 INFO  L78                 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13
[2020-10-16 11:37:46,130 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:46,130 INFO  L481      AbstractCegarLoop]: Abstraction has 136 states and 344 transitions.
[2020-10-16 11:37:46,130 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:46,130 INFO  L276                IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions.
[2020-10-16 11:37:46,130 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:46,130 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:46,130 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:46,335 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78
[2020-10-16 11:37:46,335 INFO  L429      AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:46,335 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:46,336 INFO  L82        PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 54 times
[2020-10-16 11:37:46,336 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:46,336 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325156580]
[2020-10-16 11:37:46,336 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:46,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:46,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:46,413 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325156580]
[2020-10-16 11:37:46,414 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544970499]
[2020-10-16 11:37:46,414 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:46,451 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:46,452 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:46,452 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:46,453 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:46,567 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:46,568 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:46,568 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:46,568 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497058864]
[2020-10-16 11:37:46,569 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:46,569 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:46,569 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:46,569 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:46,569 INFO  L87              Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states.
[2020-10-16 11:37:46,772 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:46,772 INFO  L93              Difference]: Finished difference Result 184 states and 436 transitions.
[2020-10-16 11:37:46,772 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:46,773 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:46,773 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:46,774 INFO  L225             Difference]: With dead ends: 184
[2020-10-16 11:37:46,774 INFO  L226             Difference]: Without dead ends: 182
[2020-10-16 11:37:46,775 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:46,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2020-10-16 11:37:46,777 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136.
[2020-10-16 11:37:46,777 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 136 states.
[2020-10-16 11:37:46,778 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions.
[2020-10-16 11:37:46,778 INFO  L78                 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13
[2020-10-16 11:37:46,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:46,778 INFO  L481      AbstractCegarLoop]: Abstraction has 136 states and 342 transitions.
[2020-10-16 11:37:46,778 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:46,778 INFO  L276                IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions.
[2020-10-16 11:37:46,778 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:46,778 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:46,779 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:46,979 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79
[2020-10-16 11:37:46,979 INFO  L429      AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:46,980 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:46,980 INFO  L82        PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 55 times
[2020-10-16 11:37:46,980 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:46,980 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888826339]
[2020-10-16 11:37:46,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:46,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:47,060 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:47,061 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888826339]
[2020-10-16 11:37:47,061 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136584215]
[2020-10-16 11:37:47,061 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:47,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:47,100 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:47,100 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:47,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:47,220 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:47,220 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:47,220 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008581564]
[2020-10-16 11:37:47,220 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:47,220 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:47,221 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:47,221 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:47,221 INFO  L87              Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states.
[2020-10-16 11:37:47,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:47,442 INFO  L93              Difference]: Finished difference Result 179 states and 427 transitions.
[2020-10-16 11:37:47,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:47,443 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:47,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:47,445 INFO  L225             Difference]: With dead ends: 179
[2020-10-16 11:37:47,445 INFO  L226             Difference]: Without dead ends: 177
[2020-10-16 11:37:47,445 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:47,446 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2020-10-16 11:37:47,448 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135.
[2020-10-16 11:37:47,448 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 135 states.
[2020-10-16 11:37:47,448 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions.
[2020-10-16 11:37:47,449 INFO  L78                 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13
[2020-10-16 11:37:47,449 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:47,449 INFO  L481      AbstractCegarLoop]: Abstraction has 135 states and 339 transitions.
[2020-10-16 11:37:47,449 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:47,449 INFO  L276                IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions.
[2020-10-16 11:37:47,450 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:47,450 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:47,450 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:47,658 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:47,659 INFO  L429      AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:47,659 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:47,659 INFO  L82        PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 56 times
[2020-10-16 11:37:47,659 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:47,660 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98563874]
[2020-10-16 11:37:47,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:47,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:47,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:47,750 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98563874]
[2020-10-16 11:37:47,751 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048444078]
[2020-10-16 11:37:47,751 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:47,788 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:47,789 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:47,789 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:47,790 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:47,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:47,903 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:47,903 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:47,903 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481359580]
[2020-10-16 11:37:47,903 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:47,904 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:47,904 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:47,904 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:47,904 INFO  L87              Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states.
[2020-10-16 11:37:48,060 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:48,061 INFO  L93              Difference]: Finished difference Result 176 states and 421 transitions.
[2020-10-16 11:37:48,061 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:48,061 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:48,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:48,063 INFO  L225             Difference]: With dead ends: 176
[2020-10-16 11:37:48,063 INFO  L226             Difference]: Without dead ends: 174
[2020-10-16 11:37:48,063 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380
[2020-10-16 11:37:48,064 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 174 states.
[2020-10-16 11:37:48,066 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139.
[2020-10-16 11:37:48,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 139 states.
[2020-10-16 11:37:48,067 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions.
[2020-10-16 11:37:48,067 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13
[2020-10-16 11:37:48,067 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:48,067 INFO  L481      AbstractCegarLoop]: Abstraction has 139 states and 350 transitions.
[2020-10-16 11:37:48,067 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:48,067 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions.
[2020-10-16 11:37:48,068 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:48,068 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:48,068 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:48,276 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:48,277 INFO  L429      AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:48,277 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:48,277 INFO  L82        PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 57 times
[2020-10-16 11:37:48,277 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:48,278 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006056049]
[2020-10-16 11:37:48,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:48,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:48,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:48,369 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006056049]
[2020-10-16 11:37:48,370 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014685346]
[2020-10-16 11:37:48,370 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:48,407 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:37:48,407 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:48,408 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:48,409 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:48,529 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:48,529 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:48,530 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:48,530 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801098180]
[2020-10-16 11:37:48,530 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:48,530 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:48,531 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:48,531 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:48,531 INFO  L87              Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states.
[2020-10-16 11:37:48,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:48,750 INFO  L93              Difference]: Finished difference Result 185 states and 439 transitions.
[2020-10-16 11:37:48,751 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:48,751 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:48,751 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:48,752 INFO  L225             Difference]: With dead ends: 185
[2020-10-16 11:37:48,753 INFO  L226             Difference]: Without dead ends: 183
[2020-10-16 11:37:48,753 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:48,754 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2020-10-16 11:37:48,755 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140.
[2020-10-16 11:37:48,755 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 140 states.
[2020-10-16 11:37:48,756 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions.
[2020-10-16 11:37:48,756 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13
[2020-10-16 11:37:48,756 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:48,756 INFO  L481      AbstractCegarLoop]: Abstraction has 140 states and 352 transitions.
[2020-10-16 11:37:48,756 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:48,756 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions.
[2020-10-16 11:37:48,756 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:48,757 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:48,757 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:48,957 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:48,958 INFO  L429      AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:48,958 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:48,958 INFO  L82        PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 58 times
[2020-10-16 11:37:48,958 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:48,959 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173231907]
[2020-10-16 11:37:48,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:48,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:49,054 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:49,055 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173231907]
[2020-10-16 11:37:49,055 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890657506]
[2020-10-16 11:37:49,055 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:49,095 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:49,095 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:49,096 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:49,097 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:49,203 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:49,204 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:49,204 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:49,204 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623779340]
[2020-10-16 11:37:49,204 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:49,205 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:49,205 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:49,205 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:49,205 INFO  L87              Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states.
[2020-10-16 11:37:49,400 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:49,401 INFO  L93              Difference]: Finished difference Result 185 states and 439 transitions.
[2020-10-16 11:37:49,401 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:49,401 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:49,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:49,403 INFO  L225             Difference]: With dead ends: 185
[2020-10-16 11:37:49,403 INFO  L226             Difference]: Without dead ends: 183
[2020-10-16 11:37:49,403 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:49,404 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2020-10-16 11:37:49,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138.
[2020-10-16 11:37:49,407 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 138 states.
[2020-10-16 11:37:49,407 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions.
[2020-10-16 11:37:49,407 INFO  L78                 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13
[2020-10-16 11:37:49,408 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:49,408 INFO  L481      AbstractCegarLoop]: Abstraction has 138 states and 345 transitions.
[2020-10-16 11:37:49,408 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:49,408 INFO  L276                IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions.
[2020-10-16 11:37:49,408 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:49,408 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:49,408 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:49,609 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:49,609 INFO  L429      AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:49,609 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:49,610 INFO  L82        PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 59 times
[2020-10-16 11:37:49,610 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:49,610 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564248338]
[2020-10-16 11:37:49,611 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:49,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:49,723 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:49,724 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564248338]
[2020-10-16 11:37:49,724 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679300348]
[2020-10-16 11:37:49,724 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:49,763 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:37:49,764 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:49,764 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:49,765 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:49,884 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:49,884 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:49,885 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:49,885 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099145742]
[2020-10-16 11:37:49,885 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:49,885 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:49,886 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:49,886 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:49,886 INFO  L87              Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states.
[2020-10-16 11:37:49,955 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:49,956 INFO  L93              Difference]: Finished difference Result 182 states and 432 transitions.
[2020-10-16 11:37:49,956 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:37:49,956 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:49,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:49,958 INFO  L225             Difference]: With dead ends: 182
[2020-10-16 11:37:49,958 INFO  L226             Difference]: Without dead ends: 180
[2020-10-16 11:37:49,959 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:37:49,959 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 180 states.
[2020-10-16 11:37:49,961 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144.
[2020-10-16 11:37:49,961 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 144 states.
[2020-10-16 11:37:49,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions.
[2020-10-16 11:37:49,962 INFO  L78                 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13
[2020-10-16 11:37:49,962 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:49,962 INFO  L481      AbstractCegarLoop]: Abstraction has 144 states and 363 transitions.
[2020-10-16 11:37:49,962 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:49,963 INFO  L276                IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions.
[2020-10-16 11:37:49,963 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:49,963 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:49,963 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:50,174 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84
[2020-10-16 11:37:50,175 INFO  L429      AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:50,175 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:50,175 INFO  L82        PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 60 times
[2020-10-16 11:37:50,176 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:50,176 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826254847]
[2020-10-16 11:37:50,176 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:50,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:50,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:50,283 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826254847]
[2020-10-16 11:37:50,283 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637309383]
[2020-10-16 11:37:50,283 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:50,327 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:50,327 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:50,328 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:50,329 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:50,450 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:50,450 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:50,450 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:50,451 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902591578]
[2020-10-16 11:37:50,451 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:50,451 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:50,452 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:50,452 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:50,452 INFO  L87              Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states.
[2020-10-16 11:37:50,632 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:50,633 INFO  L93              Difference]: Finished difference Result 185 states and 437 transitions.
[2020-10-16 11:37:50,633 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-16 11:37:50,634 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:50,634 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:50,635 INFO  L225             Difference]: With dead ends: 185
[2020-10-16 11:37:50,635 INFO  L226             Difference]: Without dead ends: 183
[2020-10-16 11:37:50,636 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380
[2020-10-16 11:37:50,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2020-10-16 11:37:50,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142.
[2020-10-16 11:37:50,638 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:37:50,639 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions.
[2020-10-16 11:37:50,639 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13
[2020-10-16 11:37:50,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:50,639 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 357 transitions.
[2020-10-16 11:37:50,639 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:50,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions.
[2020-10-16 11:37:50,640 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:50,640 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:50,640 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:50,841 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:50,841 INFO  L429      AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:50,841 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:50,842 INFO  L82        PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 61 times
[2020-10-16 11:37:50,842 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:50,842 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043394183]
[2020-10-16 11:37:50,842 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:50,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:50,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:50,929 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043394183]
[2020-10-16 11:37:50,929 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774719318]
[2020-10-16 11:37:50,929 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:50,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:50,968 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:50,969 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:51,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:51,687 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:51,687 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:51,687 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769303247]
[2020-10-16 11:37:51,687 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:51,687 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:51,688 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:51,688 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:51,688 INFO  L87              Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states.
[2020-10-16 11:37:51,918 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:51,919 INFO  L93              Difference]: Finished difference Result 191 states and 449 transitions.
[2020-10-16 11:37:51,919 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-16 11:37:51,919 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:51,920 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:51,921 INFO  L225             Difference]: With dead ends: 191
[2020-10-16 11:37:51,921 INFO  L226             Difference]: Without dead ends: 189
[2020-10-16 11:37:51,922 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:51,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 189 states.
[2020-10-16 11:37:51,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140.
[2020-10-16 11:37:51,924 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 140 states.
[2020-10-16 11:37:51,924 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions.
[2020-10-16 11:37:51,925 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13
[2020-10-16 11:37:51,925 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:51,925 INFO  L481      AbstractCegarLoop]: Abstraction has 140 states and 351 transitions.
[2020-10-16 11:37:51,925 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:51,925 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions.
[2020-10-16 11:37:51,926 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:51,926 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:51,926 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:52,127 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:52,128 INFO  L429      AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:52,128 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:52,128 INFO  L82        PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 62 times
[2020-10-16 11:37:52,128 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:52,129 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037666862]
[2020-10-16 11:37:52,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:52,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:52,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:52,216 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037666862]
[2020-10-16 11:37:52,216 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613057685]
[2020-10-16 11:37:52,216 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:52,253 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:52,254 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:52,254 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:52,255 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:52,383 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:52,383 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:52,383 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:52,384 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994704124]
[2020-10-16 11:37:52,384 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:52,384 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:52,384 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:52,384 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:52,384 INFO  L87              Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states.
[2020-10-16 11:37:52,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:52,626 INFO  L93              Difference]: Finished difference Result 187 states and 441 transitions.
[2020-10-16 11:37:52,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:37:52,627 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:52,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:52,628 INFO  L225             Difference]: With dead ends: 187
[2020-10-16 11:37:52,628 INFO  L226             Difference]: Without dead ends: 185
[2020-10-16 11:37:52,629 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:37:52,629 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 185 states.
[2020-10-16 11:37:52,631 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142.
[2020-10-16 11:37:52,631 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:37:52,632 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions.
[2020-10-16 11:37:52,632 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13
[2020-10-16 11:37:52,632 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:52,632 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 357 transitions.
[2020-10-16 11:37:52,632 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:52,632 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions.
[2020-10-16 11:37:52,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:52,633 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:52,633 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:52,834 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87
[2020-10-16 11:37:52,835 INFO  L429      AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:52,835 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:52,836 INFO  L82        PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 63 times
[2020-10-16 11:37:52,836 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:52,836 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969424614]
[2020-10-16 11:37:52,837 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:52,840 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:52,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:52,920 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969424614]
[2020-10-16 11:37:52,920 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34665268]
[2020-10-16 11:37:52,920 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:52,958 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:52,958 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:52,959 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:52,959 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:53,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:53,072 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:53,072 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:53,072 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401815574]
[2020-10-16 11:37:53,073 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:53,073 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:53,073 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:53,073 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:53,073 INFO  L87              Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states.
[2020-10-16 11:37:53,331 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:53,332 INFO  L93              Difference]: Finished difference Result 198 states and 463 transitions.
[2020-10-16 11:37:53,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:37:53,332 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:53,332 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:53,334 INFO  L225             Difference]: With dead ends: 198
[2020-10-16 11:37:53,334 INFO  L226             Difference]: Without dead ends: 196
[2020-10-16 11:37:53,334 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:37:53,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 196 states.
[2020-10-16 11:37:53,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142.
[2020-10-16 11:37:53,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:37:53,337 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions.
[2020-10-16 11:37:53,337 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13
[2020-10-16 11:37:53,337 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:53,338 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 356 transitions.
[2020-10-16 11:37:53,338 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:53,338 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions.
[2020-10-16 11:37:53,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:53,338 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:53,338 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:53,538 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:53,539 INFO  L429      AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:53,539 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:53,539 INFO  L82        PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 64 times
[2020-10-16 11:37:53,540 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:53,540 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621168377]
[2020-10-16 11:37:53,540 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:53,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:53,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:53,624 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621168377]
[2020-10-16 11:37:53,624 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024249818]
[2020-10-16 11:37:53,625 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:53,664 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:53,664 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:53,665 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:53,665 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:53,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:53,807 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:53,808 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:53,808 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457627920]
[2020-10-16 11:37:53,808 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:53,808 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:53,809 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:53,809 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:53,809 INFO  L87              Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states.
[2020-10-16 11:37:54,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:54,087 INFO  L93              Difference]: Finished difference Result 189 states and 446 transitions.
[2020-10-16 11:37:54,087 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:37:54,088 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:54,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:54,089 INFO  L225             Difference]: With dead ends: 189
[2020-10-16 11:37:54,089 INFO  L226             Difference]: Without dead ends: 187
[2020-10-16 11:37:54,089 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:37:54,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 187 states.
[2020-10-16 11:37:54,091 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139.
[2020-10-16 11:37:54,091 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 139 states.
[2020-10-16 11:37:54,092 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions.
[2020-10-16 11:37:54,092 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13
[2020-10-16 11:37:54,092 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:54,092 INFO  L481      AbstractCegarLoop]: Abstraction has 139 states and 347 transitions.
[2020-10-16 11:37:54,092 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:54,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions.
[2020-10-16 11:37:54,093 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:54,093 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:54,093 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:54,294 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89
[2020-10-16 11:37:54,294 INFO  L429      AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:54,294 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:54,295 INFO  L82        PathProgramCache]: Analyzing trace with hash 646625441, now seen corresponding path program 65 times
[2020-10-16 11:37:54,295 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:54,295 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521718899]
[2020-10-16 11:37:54,295 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:54,300 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:54,391 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:54,392 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521718899]
[2020-10-16 11:37:54,392 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175834496]
[2020-10-16 11:37:54,392 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:54,439 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:37:54,440 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:54,441 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:54,441 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:54,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:54,557 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:54,557 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:54,558 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162955362]
[2020-10-16 11:37:54,558 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:54,558 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:54,559 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:54,559 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:54,559 INFO  L87              Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states.
[2020-10-16 11:37:54,640 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:54,640 INFO  L93              Difference]: Finished difference Result 178 states and 423 transitions.
[2020-10-16 11:37:54,641 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:37:54,641 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:54,641 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:54,642 INFO  L225             Difference]: With dead ends: 178
[2020-10-16 11:37:54,643 INFO  L226             Difference]: Without dead ends: 176
[2020-10-16 11:37:54,643 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:37:54,643 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 176 states.
[2020-10-16 11:37:54,645 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143.
[2020-10-16 11:37:54,645 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-10-16 11:37:54,646 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions.
[2020-10-16 11:37:54,646 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13
[2020-10-16 11:37:54,646 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:54,646 INFO  L481      AbstractCegarLoop]: Abstraction has 143 states and 359 transitions.
[2020-10-16 11:37:54,646 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:54,646 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions.
[2020-10-16 11:37:54,646 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:54,646 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:54,646 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:54,847 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:54,847 INFO  L429      AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:54,848 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:54,848 INFO  L82        PathProgramCache]: Analyzing trace with hash 646626402, now seen corresponding path program 66 times
[2020-10-16 11:37:54,848 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:54,848 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523176573]
[2020-10-16 11:37:54,849 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:54,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:54,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:54,948 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523176573]
[2020-10-16 11:37:54,948 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384131736]
[2020-10-16 11:37:54,948 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:54,988 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:54,989 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:54,990 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:54,990 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:55,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:55,113 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:55,113 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:55,114 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078853076]
[2020-10-16 11:37:55,114 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:55,114 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:55,114 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:55,114 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:55,114 INFO  L87              Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states.
[2020-10-16 11:37:55,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:55,320 INFO  L93              Difference]: Finished difference Result 193 states and 452 transitions.
[2020-10-16 11:37:55,321 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:37:55,321 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:55,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:55,323 INFO  L225             Difference]: With dead ends: 193
[2020-10-16 11:37:55,323 INFO  L226             Difference]: Without dead ends: 191
[2020-10-16 11:37:55,323 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:37:55,324 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 191 states.
[2020-10-16 11:37:55,326 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141.
[2020-10-16 11:37:55,326 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 141 states.
[2020-10-16 11:37:55,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions.
[2020-10-16 11:37:55,326 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13
[2020-10-16 11:37:55,326 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:55,326 INFO  L481      AbstractCegarLoop]: Abstraction has 141 states and 353 transitions.
[2020-10-16 11:37:55,327 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:55,327 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions.
[2020-10-16 11:37:55,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:55,327 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:55,327 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:55,528 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91
[2020-10-16 11:37:55,528 INFO  L429      AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:55,528 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:55,529 INFO  L82        PathProgramCache]: Analyzing trace with hash 646655232, now seen corresponding path program 67 times
[2020-10-16 11:37:55,529 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:55,529 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242500371]
[2020-10-16 11:37:55,529 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:55,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:55,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:55,611 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242500371]
[2020-10-16 11:37:55,612 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927300326]
[2020-10-16 11:37:55,612 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:55,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:55,654 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:55,654 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:55,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:55,821 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:55,822 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:55,822 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191111081]
[2020-10-16 11:37:55,822 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:55,822 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:55,822 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:55,823 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:55,823 INFO  L87              Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states.
[2020-10-16 11:37:56,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:56,078 INFO  L93              Difference]: Finished difference Result 195 states and 456 transitions.
[2020-10-16 11:37:56,079 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:37:56,079 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:56,079 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:56,081 INFO  L225             Difference]: With dead ends: 195
[2020-10-16 11:37:56,081 INFO  L226             Difference]: Without dead ends: 193
[2020-10-16 11:37:56,081 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:37:56,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2020-10-16 11:37:56,083 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140.
[2020-10-16 11:37:56,083 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 140 states.
[2020-10-16 11:37:56,084 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions.
[2020-10-16 11:37:56,084 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13
[2020-10-16 11:37:56,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:56,084 INFO  L481      AbstractCegarLoop]: Abstraction has 140 states and 349 transitions.
[2020-10-16 11:37:56,084 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:56,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions.
[2020-10-16 11:37:56,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:56,084 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:56,084 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:56,285 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:56,285 INFO  L429      AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:56,286 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:56,286 INFO  L82        PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 68 times
[2020-10-16 11:37:56,286 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:56,286 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753437293]
[2020-10-16 11:37:56,287 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:56,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:56,382 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:56,382 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753437293]
[2020-10-16 11:37:56,382 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193512660]
[2020-10-16 11:37:56,382 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:56,428 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:37:56,429 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:56,429 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:56,430 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:56,542 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:56,543 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:56,543 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:56,543 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912207896]
[2020-10-16 11:37:56,543 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:56,544 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:56,544 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:56,544 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:56,544 INFO  L87              Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states.
[2020-10-16 11:37:56,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:56,676 INFO  L93              Difference]: Finished difference Result 174 states and 414 transitions.
[2020-10-16 11:37:56,676 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:37:56,676 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:56,677 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:56,678 INFO  L225             Difference]: With dead ends: 174
[2020-10-16 11:37:56,678 INFO  L226             Difference]: Without dead ends: 172
[2020-10-16 11:37:56,679 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:37:56,679 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 172 states.
[2020-10-16 11:37:56,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142.
[2020-10-16 11:37:56,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:37:56,682 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions.
[2020-10-16 11:37:56,682 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13
[2020-10-16 11:37:56,682 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:56,682 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 355 transitions.
[2020-10-16 11:37:56,682 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:56,682 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions.
[2020-10-16 11:37:56,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:56,683 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:56,683 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:56,887 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93
[2020-10-16 11:37:56,888 INFO  L429      AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:56,888 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:56,888 INFO  L82        PathProgramCache]: Analyzing trace with hash 667182192, now seen corresponding path program 69 times
[2020-10-16 11:37:56,889 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:56,889 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675052799]
[2020-10-16 11:37:56,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:56,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:56,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:56,972 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675052799]
[2020-10-16 11:37:56,973 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944013899]
[2020-10-16 11:37:56,973 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:57,012 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:37:57,012 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:57,013 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:57,013 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:57,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:57,140 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:57,141 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:57,141 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312715313]
[2020-10-16 11:37:57,141 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:57,141 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:57,141 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:57,142 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:57,142 INFO  L87              Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states.
[2020-10-16 11:37:57,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:57,371 INFO  L93              Difference]: Finished difference Result 189 states and 443 transitions.
[2020-10-16 11:37:57,371 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:37:57,371 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:57,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:57,373 INFO  L225             Difference]: With dead ends: 189
[2020-10-16 11:37:57,373 INFO  L226             Difference]: Without dead ends: 187
[2020-10-16 11:37:57,374 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:37:57,374 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 187 states.
[2020-10-16 11:37:57,376 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141.
[2020-10-16 11:37:57,376 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 141 states.
[2020-10-16 11:37:57,377 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions.
[2020-10-16 11:37:57,377 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13
[2020-10-16 11:37:57,377 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:57,377 INFO  L481      AbstractCegarLoop]: Abstraction has 141 states and 351 transitions.
[2020-10-16 11:37:57,377 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:57,377 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions.
[2020-10-16 11:37:57,378 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:57,378 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:57,378 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:57,578 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:57,579 INFO  L429      AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:57,579 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:57,579 INFO  L82        PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 70 times
[2020-10-16 11:37:57,579 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:57,580 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766806153]
[2020-10-16 11:37:57,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:57,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:57,661 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:57,661 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766806153]
[2020-10-16 11:37:57,661 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023768025]
[2020-10-16 11:37:57,661 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:57,700 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:37:57,700 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:57,701 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:57,701 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:57,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:57,820 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:57,820 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:57,820 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378040194]
[2020-10-16 11:37:57,821 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:57,821 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:57,821 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:57,821 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:57,821 INFO  L87              Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states.
[2020-10-16 11:37:57,961 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:57,961 INFO  L93              Difference]: Finished difference Result 175 states and 413 transitions.
[2020-10-16 11:37:57,962 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:37:57,962 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:57,962 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:57,964 INFO  L225             Difference]: With dead ends: 175
[2020-10-16 11:37:57,964 INFO  L226             Difference]: Without dead ends: 173
[2020-10-16 11:37:57,964 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2020-10-16 11:37:57,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2020-10-16 11:37:57,966 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145.
[2020-10-16 11:37:57,967 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 145 states.
[2020-10-16 11:37:57,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions.
[2020-10-16 11:37:57,967 INFO  L78                 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13
[2020-10-16 11:37:57,967 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:57,967 INFO  L481      AbstractCegarLoop]: Abstraction has 145 states and 357 transitions.
[2020-10-16 11:37:57,967 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:57,967 INFO  L276                IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions.
[2020-10-16 11:37:57,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:57,968 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:57,968 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:58,168 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:58,169 INFO  L429      AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:58,169 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:58,169 INFO  L82        PathProgramCache]: Analyzing trace with hash 667866641, now seen corresponding path program 71 times
[2020-10-16 11:37:58,170 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:58,170 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665884692]
[2020-10-16 11:37:58,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:58,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:58,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:58,236 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665884692]
[2020-10-16 11:37:58,236 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507245266]
[2020-10-16 11:37:58,236 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:58,284 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:37:58,284 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:58,285 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:58,286 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:58,389 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:37:58,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:58,423 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:58,423 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:58,423 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702328198]
[2020-10-16 11:37:58,424 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:58,424 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:58,424 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:58,424 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:58,424 INFO  L87              Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states.
[2020-10-16 11:37:58,756 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:58,756 INFO  L93              Difference]: Finished difference Result 195 states and 464 transitions.
[2020-10-16 11:37:58,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:37:58,757 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:58,757 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:58,759 INFO  L225             Difference]: With dead ends: 195
[2020-10-16 11:37:58,759 INFO  L226             Difference]: Without dead ends: 190
[2020-10-16 11:37:58,759 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:37:58,760 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 190 states.
[2020-10-16 11:37:58,761 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143.
[2020-10-16 11:37:58,762 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-10-16 11:37:58,762 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions.
[2020-10-16 11:37:58,762 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13
[2020-10-16 11:37:58,762 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:58,762 INFO  L481      AbstractCegarLoop]: Abstraction has 143 states and 350 transitions.
[2020-10-16 11:37:58,762 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:58,762 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions.
[2020-10-16 11:37:58,763 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:58,763 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:58,763 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:58,963 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:58,964 INFO  L429      AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:58,964 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:58,964 INFO  L82        PathProgramCache]: Analyzing trace with hash 667874112, now seen corresponding path program 72 times
[2020-10-16 11:37:58,965 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:58,965 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934185953]
[2020-10-16 11:37:58,965 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:58,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:59,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:59,044 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934185953]
[2020-10-16 11:37:59,044 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058633238]
[2020-10-16 11:37:59,044 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:59,085 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:37:59,085 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:37:59,085 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:59,086 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:59,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:59,232 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:59,232 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:59,232 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514826057]
[2020-10-16 11:37:59,233 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:59,233 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:59,233 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:59,233 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:59,234 INFO  L87              Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states.
[2020-10-16 11:37:59,499 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:37:59,499 INFO  L93              Difference]: Finished difference Result 187 states and 442 transitions.
[2020-10-16 11:37:59,500 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-16 11:37:59,500 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:37:59,500 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:37:59,501 INFO  L225             Difference]: With dead ends: 187
[2020-10-16 11:37:59,502 INFO  L226             Difference]: Without dead ends: 185
[2020-10-16 11:37:59,502 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:37:59,503 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 185 states.
[2020-10-16 11:37:59,504 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145.
[2020-10-16 11:37:59,505 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 145 states.
[2020-10-16 11:37:59,505 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions.
[2020-10-16 11:37:59,505 INFO  L78                 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13
[2020-10-16 11:37:59,505 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:37:59,505 INFO  L481      AbstractCegarLoop]: Abstraction has 145 states and 357 transitions.
[2020-10-16 11:37:59,505 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:37:59,505 INFO  L276                IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions.
[2020-10-16 11:37:59,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:37:59,506 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:37:59,506 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:37:59,706 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:59,707 INFO  L429      AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:37:59,707 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:37:59,707 INFO  L82        PathProgramCache]: Analyzing trace with hash 667895471, now seen corresponding path program 73 times
[2020-10-16 11:37:59,708 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:37:59,708 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573563384]
[2020-10-16 11:37:59,708 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:37:59,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:59,778 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:59,779 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573563384]
[2020-10-16 11:37:59,779 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764940863]
[2020-10-16 11:37:59,779 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:37:59,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:37:59,826 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:37:59,827 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:37:59,936 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:37:59,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:37:59,967 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:37:59,967 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:37:59,967 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441908362]
[2020-10-16 11:37:59,967 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:37:59,968 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:37:59,968 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:37:59,968 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:37:59,968 INFO  L87              Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states.
[2020-10-16 11:38:00,415 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:00,416 INFO  L93              Difference]: Finished difference Result 212 states and 503 transitions.
[2020-10-16 11:38:00,416 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:38:00,416 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:38:00,416 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:00,418 INFO  L225             Difference]: With dead ends: 212
[2020-10-16 11:38:00,418 INFO  L226             Difference]: Without dead ends: 207
[2020-10-16 11:38:00,418 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756
[2020-10-16 11:38:00,418 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2020-10-16 11:38:00,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145.
[2020-10-16 11:38:00,421 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 145 states.
[2020-10-16 11:38:00,421 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions.
[2020-10-16 11:38:00,421 INFO  L78                 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13
[2020-10-16 11:38:00,422 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:00,422 INFO  L481      AbstractCegarLoop]: Abstraction has 145 states and 357 transitions.
[2020-10-16 11:38:00,422 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:38:00,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions.
[2020-10-16 11:38:00,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:00,422 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:00,422 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:00,623 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98
[2020-10-16 11:38:00,623 INFO  L429      AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:00,623 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:00,624 INFO  L82        PathProgramCache]: Analyzing trace with hash 667896432, now seen corresponding path program 74 times
[2020-10-16 11:38:00,624 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:00,624 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394070768]
[2020-10-16 11:38:00,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:00,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:00,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:00,698 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394070768]
[2020-10-16 11:38:00,698 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523795997]
[2020-10-16 11:38:00,699 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:00,739 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:38:00,740 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:38:00,740 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:00,741 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:38:00,849 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:38:00,870 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:00,871 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:38:00,871 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:38:00,871 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972957402]
[2020-10-16 11:38:00,872 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:38:00,872 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:38:00,872 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:38:00,872 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:38:00,872 INFO  L87              Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states.
[2020-10-16 11:38:01,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:01,212 INFO  L93              Difference]: Finished difference Result 202 states and 480 transitions.
[2020-10-16 11:38:01,213 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:38:01,213 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:38:01,213 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:01,215 INFO  L225             Difference]: With dead ends: 202
[2020-10-16 11:38:01,215 INFO  L226             Difference]: Without dead ends: 197
[2020-10-16 11:38:01,215 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:38:01,216 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 197 states.
[2020-10-16 11:38:01,217 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141.
[2020-10-16 11:38:01,217 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 141 states.
[2020-10-16 11:38:01,218 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions.
[2020-10-16 11:38:01,218 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13
[2020-10-16 11:38:01,218 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:01,218 INFO  L481      AbstractCegarLoop]: Abstraction has 141 states and 343 transitions.
[2020-10-16 11:38:01,218 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:38:01,218 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions.
[2020-10-16 11:38:01,219 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:01,219 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:01,219 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:01,419 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:01,420 INFO  L429      AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:01,420 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:01,420 INFO  L82        PathProgramCache]: Analyzing trace with hash 668104752, now seen corresponding path program 75 times
[2020-10-16 11:38:01,421 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:01,421 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432553791]
[2020-10-16 11:38:01,421 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:01,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:01,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:01,495 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432553791]
[2020-10-16 11:38:01,495 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26881597]
[2020-10-16 11:38:01,495 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:01,534 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:38:01,534 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:38:01,535 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:01,535 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:38:01,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:01,706 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:38:01,706 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:38:01,706 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269793359]
[2020-10-16 11:38:01,707 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:38:01,707 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:38:01,707 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:38:01,707 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:38:01,707 INFO  L87              Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states.
[2020-10-16 11:38:02,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:02,000 INFO  L93              Difference]: Finished difference Result 198 states and 460 transitions.
[2020-10-16 11:38:02,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:38:02,001 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:38:02,001 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:02,002 INFO  L225             Difference]: With dead ends: 198
[2020-10-16 11:38:02,003 INFO  L226             Difference]: Without dead ends: 196
[2020-10-16 11:38:02,003 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:38:02,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 196 states.
[2020-10-16 11:38:02,007 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143.
[2020-10-16 11:38:02,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-10-16 11:38:02,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions.
[2020-10-16 11:38:02,008 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13
[2020-10-16 11:38:02,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:02,008 INFO  L481      AbstractCegarLoop]: Abstraction has 143 states and 350 transitions.
[2020-10-16 11:38:02,008 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:38:02,008 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions.
[2020-10-16 11:38:02,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:02,009 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:02,009 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:02,210 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100
[2020-10-16 11:38:02,211 INFO  L429      AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:02,211 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:02,211 INFO  L82        PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 76 times
[2020-10-16 11:38:02,211 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:02,212 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675831975]
[2020-10-16 11:38:02,212 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:02,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:02,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:02,287 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675831975]
[2020-10-16 11:38:02,288 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603254687]
[2020-10-16 11:38:02,288 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:02,327 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:38:02,327 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:38:02,328 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:02,328 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:38:02,488 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:02,488 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:38:02,488 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:38:02,488 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472752233]
[2020-10-16 11:38:02,489 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:38:02,489 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:38:02,489 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:38:02,489 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:38:02,489 INFO  L87              Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states.
[2020-10-16 11:38:02,905 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:02,905 INFO  L93              Difference]: Finished difference Result 209 states and 491 transitions.
[2020-10-16 11:38:02,906 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-10-16 11:38:02,906 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:38:02,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:02,908 INFO  L225             Difference]: With dead ends: 209
[2020-10-16 11:38:02,908 INFO  L226             Difference]: Without dead ends: 207
[2020-10-16 11:38:02,908 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650
[2020-10-16 11:38:02,909 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2020-10-16 11:38:02,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145.
[2020-10-16 11:38:02,911 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 145 states.
[2020-10-16 11:38:02,911 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions.
[2020-10-16 11:38:02,911 INFO  L78                 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13
[2020-10-16 11:38:02,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:02,911 INFO  L481      AbstractCegarLoop]: Abstraction has 145 states and 357 transitions.
[2020-10-16 11:38:02,911 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:38:02,911 INFO  L276                IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions.
[2020-10-16 11:38:02,912 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:02,912 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:02,912 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:03,112 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101
[2020-10-16 11:38:03,113 INFO  L429      AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:03,113 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:03,113 INFO  L82        PathProgramCache]: Analyzing trace with hash 668789201, now seen corresponding path program 77 times
[2020-10-16 11:38:03,113 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:03,114 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506114974]
[2020-10-16 11:38:03,114 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:03,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:03,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:03,184 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506114974]
[2020-10-16 11:38:03,184 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189675221]
[2020-10-16 11:38:03,184 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:03,224 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:38:03,224 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:38:03,225 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:03,226 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:38:03,348 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:38:03,382 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:03,383 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:38:03,383 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:38:03,383 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279676357]
[2020-10-16 11:38:03,384 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:38:03,384 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:38:03,384 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:38:03,384 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:38:03,384 INFO  L87              Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states.
[2020-10-16 11:38:03,958 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:03,959 INFO  L93              Difference]: Finished difference Result 217 states and 518 transitions.
[2020-10-16 11:38:03,959 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-10-16 11:38:03,959 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:38:03,960 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:03,961 INFO  L225             Difference]: With dead ends: 217
[2020-10-16 11:38:03,961 INFO  L226             Difference]: Without dead ends: 212
[2020-10-16 11:38:03,962 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870
[2020-10-16 11:38:03,962 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2020-10-16 11:38:03,965 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146.
[2020-10-16 11:38:03,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 146 states.
[2020-10-16 11:38:03,965 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions.
[2020-10-16 11:38:03,966 INFO  L78                 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13
[2020-10-16 11:38:03,966 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:03,966 INFO  L481      AbstractCegarLoop]: Abstraction has 146 states and 362 transitions.
[2020-10-16 11:38:03,966 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:38:03,966 INFO  L276                IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions.
[2020-10-16 11:38:03,967 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:03,967 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:03,967 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:04,177 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102
[2020-10-16 11:38:04,177 INFO  L429      AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:04,178 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:04,178 INFO  L82        PathProgramCache]: Analyzing trace with hash 668790162, now seen corresponding path program 78 times
[2020-10-16 11:38:04,178 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:04,179 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541932204]
[2020-10-16 11:38:04,179 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:04,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:04,271 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:04,272 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541932204]
[2020-10-16 11:38:04,272 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950282359]
[2020-10-16 11:38:04,272 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:04,334 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:38:04,334 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:38:04,335 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:04,336 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:38:06,563 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:38:06,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:06,602 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:38:06,602 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:38:06,602 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574573932]
[2020-10-16 11:38:06,602 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:38:06,602 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:38:06,602 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:38:06,602 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210
[2020-10-16 11:38:06,603 INFO  L87              Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states.
[2020-10-16 11:38:10,957 WARN  L193               SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 38 DAG size of output: 34
[2020-10-16 11:38:15,171 WARN  L193               SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37
[2020-10-16 11:38:15,634 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:15,635 INFO  L93              Difference]: Finished difference Result 236 states and 562 transitions.
[2020-10-16 11:38:15,635 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-10-16 11:38:15,635 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:38:15,635 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:15,636 INFO  L225             Difference]: With dead ends: 236
[2020-10-16 11:38:15,637 INFO  L226             Difference]: Without dead ends: 228
[2020-10-16 11:38:15,637 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=293, Invalid=636, Unknown=1, NotChecked=0, Total=930
[2020-10-16 11:38:15,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 228 states.
[2020-10-16 11:38:15,640 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141.
[2020-10-16 11:38:15,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 141 states.
[2020-10-16 11:38:15,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions.
[2020-10-16 11:38:15,641 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13
[2020-10-16 11:38:15,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:15,641 INFO  L481      AbstractCegarLoop]: Abstraction has 141 states and 346 transitions.
[2020-10-16 11:38:15,641 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:38:15,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions.
[2020-10-16 11:38:15,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:15,642 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:15,642 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:15,852 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103
[2020-10-16 11:38:15,853 INFO  L429      AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:15,853 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:15,853 INFO  L82        PathProgramCache]: Analyzing trace with hash 668818992, now seen corresponding path program 79 times
[2020-10-16 11:38:15,853 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:15,854 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398592231]
[2020-10-16 11:38:15,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:15,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:15,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:15,933 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398592231]
[2020-10-16 11:38:15,933 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738731614]
[2020-10-16 11:38:15,933 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:15,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:15,972 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:15,973 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:38:16,114 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:38:16,115 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:38:17,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:17,306 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:38:17,307 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14
[2020-10-16 11:38:17,307 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34929580]
[2020-10-16 11:38:17,307 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 11:38:17,307 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:38:17,307 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 11:38:17,308 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240
[2020-10-16 11:38:17,308 INFO  L87              Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 16 states.
[2020-10-16 11:38:19,104 WARN  L193               SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 44
[2020-10-16 11:38:24,562 WARN  L193               SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 51
[2020-10-16 11:38:27,493 WARN  L193               SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 60 DAG size of output: 58
[2020-10-16 11:38:58,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:58,127 INFO  L93              Difference]: Finished difference Result 230 states and 544 transitions.
[2020-10-16 11:38:58,131 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-10-16 11:38:58,131 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 13
[2020-10-16 11:38:58,131 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:58,132 INFO  L225             Difference]: With dead ends: 230
[2020-10-16 11:38:58,132 INFO  L226             Difference]: Without dead ends: 225
[2020-10-16 11:38:58,132 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=298, Invalid=687, Unknown=7, NotChecked=0, Total=992
[2020-10-16 11:38:58,133 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2020-10-16 11:38:58,134 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 140.
[2020-10-16 11:38:58,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 140 states.
[2020-10-16 11:38:58,135 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions.
[2020-10-16 11:38:58,135 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13
[2020-10-16 11:38:58,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:58,135 INFO  L481      AbstractCegarLoop]: Abstraction has 140 states and 341 transitions.
[2020-10-16 11:38:58,135 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 11:38:58,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions.
[2020-10-16 11:38:58,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:58,135 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:58,135 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:58,336 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:58,336 INFO  L429      AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:58,337 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:58,337 INFO  L82        PathProgramCache]: Analyzing trace with hash 675254592, now seen corresponding path program 80 times
[2020-10-16 11:38:58,337 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:58,337 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900287796]
[2020-10-16 11:38:58,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:58,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:58,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:58,414 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900287796]
[2020-10-16 11:38:58,414 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711397785]
[2020-10-16 11:38:58,414 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:58,454 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:38:58,454 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:38:58,455 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:58,455 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:38:58,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:58,596 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:38:58,596 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:38:58,596 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740144840]
[2020-10-16 11:38:58,597 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:38:58,597 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:38:58,598 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:38:58,598 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:38:58,598 INFO  L87              Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states.
[2020-10-16 11:38:58,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:58,874 INFO  L93              Difference]: Finished difference Result 197 states and 457 transitions.
[2020-10-16 11:38:58,875 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:38:58,875 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:38:58,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:58,876 INFO  L225             Difference]: With dead ends: 197
[2020-10-16 11:38:58,876 INFO  L226             Difference]: Without dead ends: 195
[2020-10-16 11:38:58,876 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:38:58,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 195 states.
[2020-10-16 11:38:58,879 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143.
[2020-10-16 11:38:58,879 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-10-16 11:38:58,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions.
[2020-10-16 11:38:58,880 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13
[2020-10-16 11:38:58,880 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:58,880 INFO  L481      AbstractCegarLoop]: Abstraction has 143 states and 352 transitions.
[2020-10-16 11:38:58,880 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:38:58,880 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions.
[2020-10-16 11:38:58,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:58,881 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:58,881 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:59,081 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:59,082 INFO  L429      AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:59,082 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:59,082 INFO  L82        PathProgramCache]: Analyzing trace with hash 675255553, now seen corresponding path program 81 times
[2020-10-16 11:38:59,083 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:59,083 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866903647]
[2020-10-16 11:38:59,083 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:59,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:59,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:59,162 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866903647]
[2020-10-16 11:38:59,163 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622699386]
[2020-10-16 11:38:59,163 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:59,200 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:38:59,200 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:38:59,201 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:59,202 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:38:59,338 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:59,338 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:38:59,338 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:38:59,338 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603473676]
[2020-10-16 11:38:59,339 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:38:59,339 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:38:59,339 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:38:59,339 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:38:59,339 INFO  L87              Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states.
[2020-10-16 11:38:59,636 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:38:59,636 INFO  L93              Difference]: Finished difference Result 202 states and 467 transitions.
[2020-10-16 11:38:59,637 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:38:59,637 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:38:59,637 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:38:59,638 INFO  L225             Difference]: With dead ends: 202
[2020-10-16 11:38:59,638 INFO  L226             Difference]: Without dead ends: 200
[2020-10-16 11:38:59,638 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:38:59,639 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 200 states.
[2020-10-16 11:38:59,640 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143.
[2020-10-16 11:38:59,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-10-16 11:38:59,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions.
[2020-10-16 11:38:59,641 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13
[2020-10-16 11:38:59,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:38:59,641 INFO  L481      AbstractCegarLoop]: Abstraction has 143 states and 351 transitions.
[2020-10-16 11:38:59,641 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:38:59,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions.
[2020-10-16 11:38:59,641 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:38:59,642 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:38:59,642 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:38:59,842 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106
[2020-10-16 11:38:59,843 INFO  L429      AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:38:59,843 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:38:59,843 INFO  L82        PathProgramCache]: Analyzing trace with hash 675284383, now seen corresponding path program 82 times
[2020-10-16 11:38:59,844 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:38:59,844 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185256594]
[2020-10-16 11:38:59,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:38:59,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:38:59,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:38:59,921 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185256594]
[2020-10-16 11:38:59,922 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749141652]
[2020-10-16 11:38:59,922 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:38:59,961 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:38:59,961 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:38:59,962 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:38:59,962 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:00,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:00,104 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:00,105 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:00,105 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816687205]
[2020-10-16 11:39:00,105 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:00,105 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:00,106 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:00,106 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:00,106 INFO  L87              Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states.
[2020-10-16 11:39:00,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:00,418 INFO  L93              Difference]: Finished difference Result 197 states and 458 transitions.
[2020-10-16 11:39:00,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:39:00,419 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:00,419 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:00,420 INFO  L225             Difference]: With dead ends: 197
[2020-10-16 11:39:00,420 INFO  L226             Difference]: Without dead ends: 195
[2020-10-16 11:39:00,420 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:39:00,421 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 195 states.
[2020-10-16 11:39:00,423 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142.
[2020-10-16 11:39:00,424 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:39:00,424 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions.
[2020-10-16 11:39:00,424 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13
[2020-10-16 11:39:00,424 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:00,424 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 348 transitions.
[2020-10-16 11:39:00,424 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:00,425 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions.
[2020-10-16 11:39:00,425 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:00,425 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:00,425 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:00,626 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107
[2020-10-16 11:39:00,626 INFO  L429      AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:00,626 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:00,627 INFO  L82        PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 83 times
[2020-10-16 11:39:00,627 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:00,627 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318348321]
[2020-10-16 11:39:00,627 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:00,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:00,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:00,708 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318348321]
[2020-10-16 11:39:00,709 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659831562]
[2020-10-16 11:39:00,709 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:00,749 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:39:00,749 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:00,750 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:00,751 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:00,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:00,967 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:00,967 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:00,967 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168780107]
[2020-10-16 11:39:00,967 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:00,968 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:00,968 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:00,968 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:00,968 INFO  L87              Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states.
[2020-10-16 11:39:01,601 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:01,602 INFO  L93              Difference]: Finished difference Result 214 states and 496 transitions.
[2020-10-16 11:39:01,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-10-16 11:39:01,603 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:01,603 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:01,604 INFO  L225             Difference]: With dead ends: 214
[2020-10-16 11:39:01,604 INFO  L226             Difference]: Without dead ends: 212
[2020-10-16 11:39:01,605 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756
[2020-10-16 11:39:01,606 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2020-10-16 11:39:01,609 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144.
[2020-10-16 11:39:01,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 144 states.
[2020-10-16 11:39:01,610 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions.
[2020-10-16 11:39:01,611 INFO  L78                 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13
[2020-10-16 11:39:01,611 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:01,611 INFO  L481      AbstractCegarLoop]: Abstraction has 144 states and 356 transitions.
[2020-10-16 11:39:01,611 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:01,611 INFO  L276                IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions.
[2020-10-16 11:39:01,612 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:01,612 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:01,612 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:01,813 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108
[2020-10-16 11:39:01,813 INFO  L429      AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:01,813 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:01,814 INFO  L82        PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 84 times
[2020-10-16 11:39:01,814 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:01,814 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350694273]
[2020-10-16 11:39:01,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:01,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:01,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:01,947 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350694273]
[2020-10-16 11:39:01,947 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229178400]
[2020-10-16 11:39:01,947 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:02,018 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:39:02,018 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:02,019 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:02,020 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:02,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:02,158 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:02,159 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:02,159 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433159054]
[2020-10-16 11:39:02,159 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:02,159 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:02,159 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:02,160 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:02,160 INFO  L87              Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states.
[2020-10-16 11:39:02,583 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:02,583 INFO  L93              Difference]: Finished difference Result 217 states and 502 transitions.
[2020-10-16 11:39:02,584 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-10-16 11:39:02,584 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:02,585 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:02,586 INFO  L225             Difference]: With dead ends: 217
[2020-10-16 11:39:02,586 INFO  L226             Difference]: Without dead ends: 215
[2020-10-16 11:39:02,586 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702
[2020-10-16 11:39:02,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 215 states.
[2020-10-16 11:39:02,589 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145.
[2020-10-16 11:39:02,589 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 145 states.
[2020-10-16 11:39:02,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions.
[2020-10-16 11:39:02,590 INFO  L78                 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13
[2020-10-16 11:39:02,590 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:02,590 INFO  L481      AbstractCegarLoop]: Abstraction has 145 states and 360 transitions.
[2020-10-16 11:39:02,590 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:02,591 INFO  L276                IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions.
[2020-10-16 11:39:02,591 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:02,591 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:02,591 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:02,791 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:02,792 INFO  L429      AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:02,792 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:02,793 INFO  L82        PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 85 times
[2020-10-16 11:39:02,793 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:02,793 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758572127]
[2020-10-16 11:39:02,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:02,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:02,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:02,869 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758572127]
[2020-10-16 11:39:02,870 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145156357]
[2020-10-16 11:39:02,870 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:02,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:02,925 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:02,926 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:03,053 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:03,054 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:03,054 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:03,054 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957552015]
[2020-10-16 11:39:03,055 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:03,055 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:03,055 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:03,055 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:03,056 INFO  L87              Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states.
[2020-10-16 11:39:03,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:03,502 INFO  L93              Difference]: Finished difference Result 211 states and 500 transitions.
[2020-10-16 11:39:03,502 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-10-16 11:39:03,502 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:03,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:03,503 INFO  L225             Difference]: With dead ends: 211
[2020-10-16 11:39:03,503 INFO  L226             Difference]: Without dead ends: 209
[2020-10-16 11:39:03,503 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756
[2020-10-16 11:39:03,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 209 states.
[2020-10-16 11:39:03,506 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147.
[2020-10-16 11:39:03,506 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 147 states.
[2020-10-16 11:39:03,507 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions.
[2020-10-16 11:39:03,507 INFO  L78                 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13
[2020-10-16 11:39:03,507 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:03,507 INFO  L481      AbstractCegarLoop]: Abstraction has 147 states and 367 transitions.
[2020-10-16 11:39:03,507 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:03,507 INFO  L276                IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions.
[2020-10-16 11:39:03,508 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:03,508 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:03,508 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:03,716 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:03,717 INFO  L429      AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:03,717 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:03,717 INFO  L82        PathProgramCache]: Analyzing trace with hash 696494831, now seen corresponding path program 86 times
[2020-10-16 11:39:03,717 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:03,718 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286815823]
[2020-10-16 11:39:03,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:03,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:03,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:03,798 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286815823]
[2020-10-16 11:39:03,798 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090043808]
[2020-10-16 11:39:03,798 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:03,851 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:39:03,851 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:03,852 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:03,853 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:03,966 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:39:03,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:03,978 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:03,978 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:03,978 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19804031]
[2020-10-16 11:39:03,979 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:03,979 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:03,979 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:03,979 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:03,979 INFO  L87              Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states.
[2020-10-16 11:39:04,502 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:04,502 INFO  L93              Difference]: Finished difference Result 211 states and 507 transitions.
[2020-10-16 11:39:04,503 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-10-16 11:39:04,503 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:04,503 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:04,504 INFO  L225             Difference]: With dead ends: 211
[2020-10-16 11:39:04,504 INFO  L226             Difference]: Without dead ends: 206
[2020-10-16 11:39:04,504 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992
[2020-10-16 11:39:04,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2020-10-16 11:39:04,507 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147.
[2020-10-16 11:39:04,507 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 147 states.
[2020-10-16 11:39:04,507 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions.
[2020-10-16 11:39:04,508 INFO  L78                 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13
[2020-10-16 11:39:04,508 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:04,508 INFO  L481      AbstractCegarLoop]: Abstraction has 147 states and 367 transitions.
[2020-10-16 11:39:04,508 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:04,508 INFO  L276                IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions.
[2020-10-16 11:39:04,508 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:04,508 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:04,508 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:04,709 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111
[2020-10-16 11:39:04,709 INFO  L429      AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:04,710 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:04,710 INFO  L82        PathProgramCache]: Analyzing trace with hash 696495792, now seen corresponding path program 87 times
[2020-10-16 11:39:04,710 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:04,710 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618906725]
[2020-10-16 11:39:04,710 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:04,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:04,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:04,790 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618906725]
[2020-10-16 11:39:04,791 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187097466]
[2020-10-16 11:39:04,791 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:04,829 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:39:04,829 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:04,830 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:04,830 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:04,960 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:39:05,001 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:05,001 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:05,001 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:05,002 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032596788]
[2020-10-16 11:39:05,002 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:05,002 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:05,002 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:05,003 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:05,003 INFO  L87              Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states.
[2020-10-16 11:39:05,636 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:05,636 INFO  L93              Difference]: Finished difference Result 227 states and 546 transitions.
[2020-10-16 11:39:05,636 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-10-16 11:39:05,636 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:05,637 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:05,637 INFO  L225             Difference]: With dead ends: 227
[2020-10-16 11:39:05,637 INFO  L226             Difference]: Without dead ends: 222
[2020-10-16 11:39:05,637 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056
[2020-10-16 11:39:05,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 222 states.
[2020-10-16 11:39:05,640 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145.
[2020-10-16 11:39:05,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 145 states.
[2020-10-16 11:39:05,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions.
[2020-10-16 11:39:05,641 INFO  L78                 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13
[2020-10-16 11:39:05,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:05,641 INFO  L481      AbstractCegarLoop]: Abstraction has 145 states and 360 transitions.
[2020-10-16 11:39:05,641 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:05,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions.
[2020-10-16 11:39:05,641 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:05,642 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:05,642 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:05,842 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112
[2020-10-16 11:39:05,843 INFO  L429      AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:05,843 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:05,843 INFO  L82        PathProgramCache]: Analyzing trace with hash 696503263, now seen corresponding path program 88 times
[2020-10-16 11:39:05,843 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:05,844 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198729560]
[2020-10-16 11:39:05,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:05,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:05,926 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:05,926 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198729560]
[2020-10-16 11:39:05,926 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202288276]
[2020-10-16 11:39:05,926 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:05,966 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:39:05,966 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:05,967 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:05,968 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:06,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:06,089 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:06,089 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:06,089 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471190839]
[2020-10-16 11:39:06,089 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:06,089 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:06,090 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:06,090 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:06,090 INFO  L87              Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states.
[2020-10-16 11:39:06,593 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:06,594 INFO  L93              Difference]: Finished difference Result 221 states and 523 transitions.
[2020-10-16 11:39:06,594 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-10-16 11:39:06,595 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:06,595 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:06,595 INFO  L225             Difference]: With dead ends: 221
[2020-10-16 11:39:06,595 INFO  L226             Difference]: Without dead ends: 219
[2020-10-16 11:39:06,596 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930
[2020-10-16 11:39:06,596 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 219 states.
[2020-10-16 11:39:06,599 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147.
[2020-10-16 11:39:06,599 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 147 states.
[2020-10-16 11:39:06,600 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions.
[2020-10-16 11:39:06,600 INFO  L78                 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13
[2020-10-16 11:39:06,600 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:06,600 INFO  L481      AbstractCegarLoop]: Abstraction has 147 states and 367 transitions.
[2020-10-16 11:39:06,600 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:06,600 INFO  L276                IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions.
[2020-10-16 11:39:06,601 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:06,601 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:06,601 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:06,811 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:06,812 INFO  L429      AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:06,812 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:06,812 INFO  L82        PathProgramCache]: Analyzing trace with hash 696524622, now seen corresponding path program 89 times
[2020-10-16 11:39:06,813 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:06,813 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773457096]
[2020-10-16 11:39:06,813 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:06,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:06,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:06,895 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773457096]
[2020-10-16 11:39:06,895 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344458705]
[2020-10-16 11:39:06,895 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:06,937 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:39:06,937 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:06,938 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:06,938 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:07,046 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:39:07,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:07,057 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:07,058 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:07,058 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579502489]
[2020-10-16 11:39:07,058 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:07,058 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:07,059 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:07,059 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:07,059 INFO  L87              Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states.
[2020-10-16 11:39:07,718 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:07,718 INFO  L93              Difference]: Finished difference Result 240 states and 577 transitions.
[2020-10-16 11:39:07,719 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-10-16 11:39:07,719 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:07,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:07,720 INFO  L225             Difference]: With dead ends: 240
[2020-10-16 11:39:07,720 INFO  L226             Difference]: Without dead ends: 232
[2020-10-16 11:39:07,720 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 11:39:07,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 232 states.
[2020-10-16 11:39:07,723 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148.
[2020-10-16 11:39:07,723 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 148 states.
[2020-10-16 11:39:07,724 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions.
[2020-10-16 11:39:07,724 INFO  L78                 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13
[2020-10-16 11:39:07,724 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:07,724 INFO  L481      AbstractCegarLoop]: Abstraction has 148 states and 372 transitions.
[2020-10-16 11:39:07,724 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:07,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions.
[2020-10-16 11:39:07,724 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:07,725 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:07,725 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:07,925 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114
[2020-10-16 11:39:07,926 INFO  L429      AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:07,926 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:07,926 INFO  L82        PathProgramCache]: Analyzing trace with hash 696525583, now seen corresponding path program 90 times
[2020-10-16 11:39:07,926 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:07,927 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736958784]
[2020-10-16 11:39:07,927 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:07,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:08,016 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:08,017 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736958784]
[2020-10-16 11:39:08,017 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518112945]
[2020-10-16 11:39:08,017 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:08,079 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:39:08,080 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:08,081 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:08,082 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:08,246 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:39:08,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:08,268 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:08,268 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:08,269 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639698339]
[2020-10-16 11:39:08,269 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:08,269 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:08,270 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:08,270 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:08,270 INFO  L87              Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states.
[2020-10-16 11:39:09,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:09,223 INFO  L93              Difference]: Finished difference Result 238 states and 576 transitions.
[2020-10-16 11:39:09,224 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-10-16 11:39:09,224 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:09,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:09,225 INFO  L225             Difference]: With dead ends: 238
[2020-10-16 11:39:09,226 INFO  L226             Difference]: Without dead ends: 230
[2020-10-16 11:39:09,226 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 11:39:09,227 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 230 states.
[2020-10-16 11:39:09,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142.
[2020-10-16 11:39:09,230 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:39:09,231 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions.
[2020-10-16 11:39:09,231 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13
[2020-10-16 11:39:09,232 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:09,232 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 354 transitions.
[2020-10-16 11:39:09,232 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:09,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions.
[2020-10-16 11:39:09,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:09,233 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:09,233 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:09,446 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:09,446 INFO  L429      AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:09,447 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:09,447 INFO  L82        PathProgramCache]: Analyzing trace with hash 696733903, now seen corresponding path program 91 times
[2020-10-16 11:39:09,447 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:09,447 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529985888]
[2020-10-16 11:39:09,448 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:09,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:09,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:09,563 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529985888]
[2020-10-16 11:39:09,563 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489405331]
[2020-10-16 11:39:09,563 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:09,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:09,625 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:09,626 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:09,832 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:09,833 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:09,833 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:09,833 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484260012]
[2020-10-16 11:39:09,833 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:09,834 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:09,834 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:09,834 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:09,834 INFO  L87              Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states.
[2020-10-16 11:39:10,196 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:10,196 INFO  L93              Difference]: Finished difference Result 195 states and 459 transitions.
[2020-10-16 11:39:10,196 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:39:10,197 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:10,197 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:10,198 INFO  L225             Difference]: With dead ends: 195
[2020-10-16 11:39:10,198 INFO  L226             Difference]: Without dead ends: 193
[2020-10-16 11:39:10,198 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:39:10,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2020-10-16 11:39:10,201 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142.
[2020-10-16 11:39:10,201 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:39:10,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions.
[2020-10-16 11:39:10,201 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13
[2020-10-16 11:39:10,202 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:10,202 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 354 transitions.
[2020-10-16 11:39:10,202 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:10,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions.
[2020-10-16 11:39:10,202 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:10,202 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:10,203 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:10,410 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116
[2020-10-16 11:39:10,410 INFO  L429      AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:10,411 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:10,411 INFO  L82        PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 92 times
[2020-10-16 11:39:10,411 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:10,412 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041465070]
[2020-10-16 11:39:10,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:10,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:10,506 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:10,506 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041465070]
[2020-10-16 11:39:10,506 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137941701]
[2020-10-16 11:39:10,507 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:10,546 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:39:10,546 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:10,547 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:10,547 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:10,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:10,697 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:10,697 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:39:10,698 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918865557]
[2020-10-16 11:39:10,698 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:39:10,698 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:10,698 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:39:10,699 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:39:10,699 INFO  L87              Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states.
[2020-10-16 11:39:11,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:39:11,219 INFO  L93              Difference]: Finished difference Result 206 states and 489 transitions.
[2020-10-16 11:39:11,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-10-16 11:39:11,220 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:39:11,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:39:11,220 INFO  L225             Difference]: With dead ends: 206
[2020-10-16 11:39:11,220 INFO  L226             Difference]: Without dead ends: 204
[2020-10-16 11:39:11,221 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756
[2020-10-16 11:39:11,221 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204 states.
[2020-10-16 11:39:11,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143.
[2020-10-16 11:39:11,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 143 states.
[2020-10-16 11:39:11,223 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions.
[2020-10-16 11:39:11,223 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13
[2020-10-16 11:39:11,224 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:39:11,224 INFO  L481      AbstractCegarLoop]: Abstraction has 143 states and 356 transitions.
[2020-10-16 11:39:11,224 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:39:11,224 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions.
[2020-10-16 11:39:11,224 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:39:11,224 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:39:11,224 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:39:11,425 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:11,425 INFO  L429      AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:39:11,425 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:39:11,426 INFO  L82        PathProgramCache]: Analyzing trace with hash 697419313, now seen corresponding path program 93 times
[2020-10-16 11:39:11,426 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:39:11,426 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010435179]
[2020-10-16 11:39:11,426 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:39:11,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:39:11,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:11,512 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010435179]
[2020-10-16 11:39:11,512 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774762988]
[2020-10-16 11:39:11,512 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:39:11,560 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:39:11,561 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:39:11,564 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:39:11,564 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:39:11,698 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:39:13,187 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:39:13,188 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:39:13,188 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14
[2020-10-16 11:39:13,188 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574368334]
[2020-10-16 11:39:13,188 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 11:39:13,188 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:39:13,188 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 11:39:13,189 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240
[2020-10-16 11:39:13,189 INFO  L87              Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states.
[2020-10-16 11:39:15,113 WARN  L193               SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 25
[2020-10-16 11:39:35,511 WARN  L193               SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29
[2020-10-16 11:39:55,309 WARN  L193               SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 26 DAG size of output: 25
[2020-10-16 11:40:13,109 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:13,109 INFO  L93              Difference]: Finished difference Result 241 states and 572 transitions.
[2020-10-16 11:40:13,114 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. 
[2020-10-16 11:40:13,114 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 13
[2020-10-16 11:40:13,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:13,115 INFO  L225             Difference]: With dead ends: 241
[2020-10-16 11:40:13,115 INFO  L226             Difference]: Without dead ends: 236
[2020-10-16 11:40:13,115 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332
[2020-10-16 11:40:13,116 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2020-10-16 11:40:13,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 139.
[2020-10-16 11:40:13,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 139 states.
[2020-10-16 11:40:13,119 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions.
[2020-10-16 11:40:13,120 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13
[2020-10-16 11:40:13,120 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:13,120 INFO  L481      AbstractCegarLoop]: Abstraction has 139 states and 339 transitions.
[2020-10-16 11:40:13,120 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 11:40:13,120 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions.
[2020-10-16 11:40:13,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:13,121 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:13,121 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:13,331 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118
[2020-10-16 11:40:13,332 INFO  L429      AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:13,332 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:13,332 INFO  L82        PathProgramCache]: Analyzing trace with hash 896899632, now seen corresponding path program 94 times
[2020-10-16 11:40:13,333 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:13,333 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449328258]
[2020-10-16 11:40:13,333 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:13,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:13,431 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:13,432 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449328258]
[2020-10-16 11:40:13,432 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998817400]
[2020-10-16 11:40:13,432 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:13,472 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:40:13,473 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:13,473 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:13,474 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:13,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:13,616 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:13,616 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:13,616 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759755375]
[2020-10-16 11:40:13,617 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:13,617 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:13,617 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:13,617 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:13,618 INFO  L87              Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states.
[2020-10-16 11:40:13,870 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:13,870 INFO  L93              Difference]: Finished difference Result 194 states and 449 transitions.
[2020-10-16 11:40:13,871 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:40:13,872 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:13,872 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:13,873 INFO  L225             Difference]: With dead ends: 194
[2020-10-16 11:40:13,873 INFO  L226             Difference]: Without dead ends: 192
[2020-10-16 11:40:13,873 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:40:13,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2020-10-16 11:40:13,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141.
[2020-10-16 11:40:13,876 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 141 states.
[2020-10-16 11:40:13,876 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions.
[2020-10-16 11:40:13,876 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13
[2020-10-16 11:40:13,876 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:13,876 INFO  L481      AbstractCegarLoop]: Abstraction has 141 states and 345 transitions.
[2020-10-16 11:40:13,876 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:13,877 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions.
[2020-10-16 11:40:13,877 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:13,877 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:13,877 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:14,078 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:14,078 INFO  L429      AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:14,078 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:14,079 INFO  L82        PathProgramCache]: Analyzing trace with hash 896900593, now seen corresponding path program 95 times
[2020-10-16 11:40:14,079 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:14,079 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037195620]
[2020-10-16 11:40:14,079 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:14,083 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:14,175 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:14,175 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037195620]
[2020-10-16 11:40:14,175 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534149656]
[2020-10-16 11:40:14,176 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:14,216 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:40:14,217 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:14,218 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:14,218 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:14,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:14,374 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:14,374 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:14,374 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823573760]
[2020-10-16 11:40:14,375 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:14,375 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:14,375 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:14,375 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:14,376 INFO  L87              Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states.
[2020-10-16 11:40:14,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:14,723 INFO  L93              Difference]: Finished difference Result 205 states and 471 transitions.
[2020-10-16 11:40:14,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:40:14,724 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:14,724 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:14,725 INFO  L225             Difference]: With dead ends: 205
[2020-10-16 11:40:14,725 INFO  L226             Difference]: Without dead ends: 203
[2020-10-16 11:40:14,725 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:40:14,726 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2020-10-16 11:40:14,729 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142.
[2020-10-16 11:40:14,729 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:40:14,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions.
[2020-10-16 11:40:14,730 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13
[2020-10-16 11:40:14,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:14,730 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 347 transitions.
[2020-10-16 11:40:14,730 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:14,730 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions.
[2020-10-16 11:40:14,731 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:14,731 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:14,731 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:14,941 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:14,942 INFO  L429      AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:14,942 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:14,943 INFO  L82        PathProgramCache]: Analyzing trace with hash 896929423, now seen corresponding path program 96 times
[2020-10-16 11:40:14,943 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:14,944 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725532952]
[2020-10-16 11:40:14,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:14,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:15,051 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:15,052 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725532952]
[2020-10-16 11:40:15,052 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814100790]
[2020-10-16 11:40:15,052 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:15,100 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:40:15,100 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:15,101 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:15,102 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:15,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:15,242 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:15,242 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:15,242 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296862030]
[2020-10-16 11:40:15,243 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:15,243 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:15,243 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:15,243 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:15,244 INFO  L87              Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states.
[2020-10-16 11:40:15,564 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:15,565 INFO  L93              Difference]: Finished difference Result 201 states and 465 transitions.
[2020-10-16 11:40:15,566 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:40:15,566 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:15,566 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:15,567 INFO  L225             Difference]: With dead ends: 201
[2020-10-16 11:40:15,567 INFO  L226             Difference]: Without dead ends: 199
[2020-10-16 11:40:15,567 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:40:15,568 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 199 states.
[2020-10-16 11:40:15,570 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137.
[2020-10-16 11:40:15,570 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 137 states.
[2020-10-16 11:40:15,570 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions.
[2020-10-16 11:40:15,570 INFO  L78                 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13
[2020-10-16 11:40:15,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:15,571 INFO  L481      AbstractCegarLoop]: Abstraction has 137 states and 334 transitions.
[2020-10-16 11:40:15,571 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:15,571 INFO  L276                IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions.
[2020-10-16 11:40:15,571 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:15,571 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:15,571 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:15,772 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:15,772 INFO  L429      AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:15,773 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:15,773 INFO  L82        PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 97 times
[2020-10-16 11:40:15,773 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:15,773 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747298331]
[2020-10-16 11:40:15,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:15,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:15,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:15,863 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747298331]
[2020-10-16 11:40:15,864 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885660806]
[2020-10-16 11:40:15,864 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:15,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:15,909 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:15,910 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:16,143 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:16,144 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:16,144 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:16,145 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414262114]
[2020-10-16 11:40:16,145 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:16,145 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:16,146 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:16,146 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:16,146 INFO  L87              Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states.
[2020-10-16 11:40:16,528 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:16,529 INFO  L93              Difference]: Finished difference Result 194 states and 449 transitions.
[2020-10-16 11:40:16,530 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:40:16,530 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:16,531 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:16,531 INFO  L225             Difference]: With dead ends: 194
[2020-10-16 11:40:16,532 INFO  L226             Difference]: Without dead ends: 192
[2020-10-16 11:40:16,532 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:40:16,533 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2020-10-16 11:40:16,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140.
[2020-10-16 11:40:16,536 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 140 states.
[2020-10-16 11:40:16,537 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions.
[2020-10-16 11:40:16,537 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13
[2020-10-16 11:40:16,537 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:16,537 INFO  L481      AbstractCegarLoop]: Abstraction has 140 states and 345 transitions.
[2020-10-16 11:40:16,538 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:16,538 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions.
[2020-10-16 11:40:16,538 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:16,539 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:16,539 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:16,750 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122
[2020-10-16 11:40:16,751 INFO  L429      AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:16,751 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:16,751 INFO  L82        PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 98 times
[2020-10-16 11:40:16,752 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:16,752 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120792282]
[2020-10-16 11:40:16,752 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:16,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:16,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:16,872 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120792282]
[2020-10-16 11:40:16,873 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224230509]
[2020-10-16 11:40:16,873 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:16,939 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:40:16,939 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:16,940 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:16,941 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:17,132 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:17,133 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:17,133 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:17,133 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447616316]
[2020-10-16 11:40:17,133 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:17,134 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:17,134 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:17,134 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:17,134 INFO  L87              Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states.
[2020-10-16 11:40:17,546 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:17,546 INFO  L93              Difference]: Finished difference Result 209 states and 478 transitions.
[2020-10-16 11:40:17,547 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-10-16 11:40:17,547 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:17,547 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:17,548 INFO  L225             Difference]: With dead ends: 209
[2020-10-16 11:40:17,548 INFO  L226             Difference]: Without dead ends: 207
[2020-10-16 11:40:17,548 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:40:17,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2020-10-16 11:40:17,551 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140.
[2020-10-16 11:40:17,551 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 140 states.
[2020-10-16 11:40:17,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions.
[2020-10-16 11:40:17,551 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13
[2020-10-16 11:40:17,552 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:17,552 INFO  L481      AbstractCegarLoop]: Abstraction has 140 states and 344 transitions.
[2020-10-16 11:40:17,552 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:17,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions.
[2020-10-16 11:40:17,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:17,552 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:17,552 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:17,757 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:17,757 INFO  L429      AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:17,757 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:17,758 INFO  L82        PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 99 times
[2020-10-16 11:40:17,758 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:17,758 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276063957]
[2020-10-16 11:40:17,758 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:17,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:17,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:17,846 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276063957]
[2020-10-16 11:40:17,846 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599368555]
[2020-10-16 11:40:17,846 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:17,887 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:40:17,887 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:17,888 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:17,889 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:18,030 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:18,030 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:18,031 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:18,031 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286971948]
[2020-10-16 11:40:18,031 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:18,031 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:18,031 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:18,031 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:18,032 INFO  L87              Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states.
[2020-10-16 11:40:18,388 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:18,388 INFO  L93              Difference]: Finished difference Result 202 states and 464 transitions.
[2020-10-16 11:40:18,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-10-16 11:40:18,389 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:18,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:18,390 INFO  L225             Difference]: With dead ends: 202
[2020-10-16 11:40:18,390 INFO  L226             Difference]: Without dead ends: 200
[2020-10-16 11:40:18,390 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:40:18,391 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 200 states.
[2020-10-16 11:40:18,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139.
[2020-10-16 11:40:18,393 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 139 states.
[2020-10-16 11:40:18,394 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions.
[2020-10-16 11:40:18,394 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13
[2020-10-16 11:40:18,394 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:18,394 INFO  L481      AbstractCegarLoop]: Abstraction has 139 states and 341 transitions.
[2020-10-16 11:40:18,394 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:18,395 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions.
[2020-10-16 11:40:18,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:18,395 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:18,395 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:18,596 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124
[2020-10-16 11:40:18,596 INFO  L429      AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:18,596 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:18,597 INFO  L82        PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 100 times
[2020-10-16 11:40:18,597 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:18,597 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842498586]
[2020-10-16 11:40:18,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:18,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:18,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:18,679 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842498586]
[2020-10-16 11:40:18,679 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102710260]
[2020-10-16 11:40:18,679 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:18,719 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:40:18,719 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:18,720 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:18,720 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:18,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:18,870 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:18,870 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:18,870 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946551668]
[2020-10-16 11:40:18,871 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:18,871 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:18,871 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:18,871 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:18,871 INFO  L87              Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states.
[2020-10-16 11:40:19,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:19,215 INFO  L93              Difference]: Finished difference Result 201 states and 465 transitions.
[2020-10-16 11:40:19,216 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:40:19,216 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:19,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:19,217 INFO  L225             Difference]: With dead ends: 201
[2020-10-16 11:40:19,217 INFO  L226             Difference]: Without dead ends: 199
[2020-10-16 11:40:19,217 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:40:19,218 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 199 states.
[2020-10-16 11:40:19,220 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141.
[2020-10-16 11:40:19,220 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 141 states.
[2020-10-16 11:40:19,221 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions.
[2020-10-16 11:40:19,221 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13
[2020-10-16 11:40:19,221 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:19,221 INFO  L481      AbstractCegarLoop]: Abstraction has 141 states and 349 transitions.
[2020-10-16 11:40:19,221 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:19,221 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions.
[2020-10-16 11:40:19,222 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:19,222 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:19,222 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:19,422 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125
[2020-10-16 11:40:19,423 INFO  L429      AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:19,423 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:19,423 INFO  L82        PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 101 times
[2020-10-16 11:40:19,424 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:19,424 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341345512]
[2020-10-16 11:40:19,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:19,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:19,506 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:19,507 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341345512]
[2020-10-16 11:40:19,507 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590525094]
[2020-10-16 11:40:19,507 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:19,546 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:40:19,546 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:19,547 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:19,548 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:19,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:19,700 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:19,700 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:19,700 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207582371]
[2020-10-16 11:40:19,701 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:19,701 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:19,701 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:19,701 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:19,702 INFO  L87              Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states.
[2020-10-16 11:40:20,178 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:20,178 INFO  L93              Difference]: Finished difference Result 215 states and 495 transitions.
[2020-10-16 11:40:20,178 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-10-16 11:40:20,179 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:20,179 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:20,179 INFO  L225             Difference]: With dead ends: 215
[2020-10-16 11:40:20,179 INFO  L226             Difference]: Without dead ends: 213
[2020-10-16 11:40:20,180 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756
[2020-10-16 11:40:20,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2020-10-16 11:40:20,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142.
[2020-10-16 11:40:20,184 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:40:20,184 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions.
[2020-10-16 11:40:20,184 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13
[2020-10-16 11:40:20,184 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:20,184 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 353 transitions.
[2020-10-16 11:40:20,185 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:20,185 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions.
[2020-10-16 11:40:20,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:20,185 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:20,185 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:20,396 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:20,397 INFO  L429      AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:20,397 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:20,398 INFO  L82        PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 102 times
[2020-10-16 11:40:20,398 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:20,399 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945371996]
[2020-10-16 11:40:20,399 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:20,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:20,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:20,485 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945371996]
[2020-10-16 11:40:20,485 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581930364]
[2020-10-16 11:40:20,486 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:20,526 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:40:20,526 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:20,527 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:20,528 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:20,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:20,665 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:20,665 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:20,665 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362370594]
[2020-10-16 11:40:20,666 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:20,666 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:20,666 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:20,666 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:20,666 INFO  L87              Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states.
[2020-10-16 11:40:21,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:21,099 INFO  L93              Difference]: Finished difference Result 196 states and 461 transitions.
[2020-10-16 11:40:21,100 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:40:21,100 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:21,101 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:21,101 INFO  L225             Difference]: With dead ends: 196
[2020-10-16 11:40:21,102 INFO  L226             Difference]: Without dead ends: 194
[2020-10-16 11:40:21,102 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702
[2020-10-16 11:40:21,103 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 194 states.
[2020-10-16 11:40:21,106 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144.
[2020-10-16 11:40:21,106 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 144 states.
[2020-10-16 11:40:21,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions.
[2020-10-16 11:40:21,107 INFO  L78                 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13
[2020-10-16 11:40:21,107 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:21,107 INFO  L481      AbstractCegarLoop]: Abstraction has 144 states and 360 transitions.
[2020-10-16 11:40:21,107 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:21,108 INFO  L276                IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions.
[2020-10-16 11:40:21,108 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:21,108 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:21,108 INFO  L422         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:21,310 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:21,311 INFO  L429      AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:21,311 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:21,311 INFO  L82        PathProgramCache]: Analyzing trace with hash 1555369361, now seen corresponding path program 103 times
[2020-10-16 11:40:21,312 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:21,312 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716136746]
[2020-10-16 11:40:21,312 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:21,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:21,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:21,406 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716136746]
[2020-10-16 11:40:21,406 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319558408]
[2020-10-16 11:40:21,407 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:21,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:21,447 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:21,447 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:21,562 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:40:21,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:21,575 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:21,575 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:21,576 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244032298]
[2020-10-16 11:40:21,576 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:21,576 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:21,577 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:21,577 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:21,577 INFO  L87              Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states.
[2020-10-16 11:40:22,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:22,000 INFO  L93              Difference]: Finished difference Result 191 states and 460 transitions.
[2020-10-16 11:40:22,002 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:40:22,002 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:22,002 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:22,003 INFO  L225             Difference]: With dead ends: 191
[2020-10-16 11:40:22,004 INFO  L226             Difference]: Without dead ends: 186
[2020-10-16 11:40:22,004 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:40:22,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 186 states.
[2020-10-16 11:40:22,008 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144.
[2020-10-16 11:40:22,008 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 144 states.
[2020-10-16 11:40:22,009 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions.
[2020-10-16 11:40:22,009 INFO  L78                 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13
[2020-10-16 11:40:22,010 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:22,010 INFO  L481      AbstractCegarLoop]: Abstraction has 144 states and 360 transitions.
[2020-10-16 11:40:22,010 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:22,010 INFO  L276                IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions.
[2020-10-16 11:40:22,011 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:22,011 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:22,011 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:22,224 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128
[2020-10-16 11:40:22,224 INFO  L429      AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:22,225 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:22,225 INFO  L82        PathProgramCache]: Analyzing trace with hash 1555370322, now seen corresponding path program 104 times
[2020-10-16 11:40:22,225 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:22,225 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609001721]
[2020-10-16 11:40:22,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:22,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:22,318 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:22,319 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609001721]
[2020-10-16 11:40:22,319 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427448778]
[2020-10-16 11:40:22,319 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:22,367 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:40:22,368 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:22,369 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:22,369 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:22,537 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:40:22,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:22,609 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:22,609 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:22,610 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812460154]
[2020-10-16 11:40:22,610 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:22,610 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:22,610 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:22,611 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:22,611 INFO  L87              Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states.
[2020-10-16 11:40:23,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:23,222 INFO  L93              Difference]: Finished difference Result 232 states and 551 transitions.
[2020-10-16 11:40:23,223 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-10-16 11:40:23,223 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:23,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:23,224 INFO  L225             Difference]: With dead ends: 232
[2020-10-16 11:40:23,224 INFO  L226             Difference]: Without dead ends: 227
[2020-10-16 11:40:23,225 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930
[2020-10-16 11:40:23,225 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 227 states.
[2020-10-16 11:40:23,227 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142.
[2020-10-16 11:40:23,228 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2020-10-16 11:40:23,228 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions.
[2020-10-16 11:40:23,228 INFO  L78                 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13
[2020-10-16 11:40:23,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:23,228 INFO  L481      AbstractCegarLoop]: Abstraction has 142 states and 353 transitions.
[2020-10-16 11:40:23,228 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:23,229 INFO  L276                IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions.
[2020-10-16 11:40:23,229 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:23,229 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:23,229 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:23,429 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:23,430 INFO  L429      AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:23,430 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:23,431 INFO  L82        PathProgramCache]: Analyzing trace with hash 1555377793, now seen corresponding path program 105 times
[2020-10-16 11:40:23,431 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:23,431 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001028793]
[2020-10-16 11:40:23,431 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:23,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:23,516 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:23,516 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001028793]
[2020-10-16 11:40:23,517 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949323718]
[2020-10-16 11:40:23,517 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:23,556 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:40:23,557 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:23,558 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:23,558 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:23,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:23,716 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:23,716 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:23,717 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870412555]
[2020-10-16 11:40:23,717 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:23,717 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:23,717 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:23,717 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:23,717 INFO  L87              Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states.
[2020-10-16 11:40:24,382 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:24,382 INFO  L93              Difference]: Finished difference Result 222 states and 521 transitions.
[2020-10-16 11:40:24,383 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-10-16 11:40:24,384 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:24,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:24,385 INFO  L225             Difference]: With dead ends: 222
[2020-10-16 11:40:24,385 INFO  L226             Difference]: Without dead ends: 220
[2020-10-16 11:40:24,385 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930
[2020-10-16 11:40:24,386 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 220 states.
[2020-10-16 11:40:24,388 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144.
[2020-10-16 11:40:24,389 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 144 states.
[2020-10-16 11:40:24,389 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions.
[2020-10-16 11:40:24,389 INFO  L78                 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13
[2020-10-16 11:40:24,390 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:24,390 INFO  L481      AbstractCegarLoop]: Abstraction has 144 states and 360 transitions.
[2020-10-16 11:40:24,390 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:24,390 INFO  L276                IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions.
[2020-10-16 11:40:24,390 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:24,390 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:24,391 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:24,600 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:24,601 INFO  L429      AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:24,601 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:24,601 INFO  L82        PathProgramCache]: Analyzing trace with hash 1555399152, now seen corresponding path program 106 times
[2020-10-16 11:40:24,602 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:24,602 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128848332]
[2020-10-16 11:40:24,602 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:24,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:24,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:24,694 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128848332]
[2020-10-16 11:40:24,694 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946780928]
[2020-10-16 11:40:24,694 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:24,739 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:40:24,739 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:24,740 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:24,741 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:24,897 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:40:24,941 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:24,942 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:24,942 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:24,942 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578432118]
[2020-10-16 11:40:24,942 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:24,942 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:24,943 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:24,943 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:24,943 INFO  L87              Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states.
[2020-10-16 11:40:25,834 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:25,835 INFO  L93              Difference]: Finished difference Result 254 states and 608 transitions.
[2020-10-16 11:40:25,835 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-10-16 11:40:25,835 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:25,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:25,836 INFO  L225             Difference]: With dead ends: 254
[2020-10-16 11:40:25,836 INFO  L226             Difference]: Without dead ends: 246
[2020-10-16 11:40:25,836 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 11:40:25,837 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 246 states.
[2020-10-16 11:40:25,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146.
[2020-10-16 11:40:25,840 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 146 states.
[2020-10-16 11:40:25,840 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions.
[2020-10-16 11:40:25,840 INFO  L78                 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13
[2020-10-16 11:40:25,840 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:25,841 INFO  L481      AbstractCegarLoop]: Abstraction has 146 states and 370 transitions.
[2020-10-16 11:40:25,841 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:25,841 INFO  L276                IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions.
[2020-10-16 11:40:25,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:25,841 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:25,842 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:26,051 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:26,052 INFO  L429      AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:26,052 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:26,052 INFO  L82        PathProgramCache]: Analyzing trace with hash 1555400113, now seen corresponding path program 107 times
[2020-10-16 11:40:26,052 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:26,053 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886704146]
[2020-10-16 11:40:26,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:26,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:26,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:26,136 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886704146]
[2020-10-16 11:40:26,136 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779620361]
[2020-10-16 11:40:26,136 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:26,177 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:40:26,177 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:26,178 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:26,178 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:26,310 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:40:26,342 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:26,342 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:26,342 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:26,343 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359834007]
[2020-10-16 11:40:26,343 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:26,343 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:26,343 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:26,343 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:26,343 INFO  L87              Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states.
[2020-10-16 11:40:27,176 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:27,177 INFO  L93              Difference]: Finished difference Result 246 states and 581 transitions.
[2020-10-16 11:40:27,177 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-10-16 11:40:27,177 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:27,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:27,178 INFO  L225             Difference]: With dead ends: 246
[2020-10-16 11:40:27,179 INFO  L226             Difference]: Without dead ends: 238
[2020-10-16 11:40:27,179 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260
[2020-10-16 11:40:27,179 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 238 states.
[2020-10-16 11:40:27,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139.
[2020-10-16 11:40:27,184 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 139 states.
[2020-10-16 11:40:27,184 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions.
[2020-10-16 11:40:27,184 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13
[2020-10-16 11:40:27,184 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:27,184 INFO  L481      AbstractCegarLoop]: Abstraction has 139 states and 344 transitions.
[2020-10-16 11:40:27,184 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:27,185 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions.
[2020-10-16 11:40:27,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:27,185 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:27,185 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:27,385 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132
[2020-10-16 11:40:27,386 INFO  L429      AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:27,386 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:27,386 INFO  L82        PathProgramCache]: Analyzing trace with hash 1555608433, now seen corresponding path program 108 times
[2020-10-16 11:40:27,387 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:27,387 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886975547]
[2020-10-16 11:40:27,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:27,392 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:27,482 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:27,483 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886975547]
[2020-10-16 11:40:27,483 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877270630]
[2020-10-16 11:40:27,483 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:27,525 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:40:27,526 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:27,527 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:27,527 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:27,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:27,701 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:27,701 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:27,702 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128216398]
[2020-10-16 11:40:27,702 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:27,702 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:27,703 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:27,703 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:27,703 INFO  L87              Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states.
[2020-10-16 11:40:28,210 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:28,210 INFO  L93              Difference]: Finished difference Result 208 states and 483 transitions.
[2020-10-16 11:40:28,211 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-10-16 11:40:28,211 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:28,211 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:28,212 INFO  L225             Difference]: With dead ends: 208
[2020-10-16 11:40:28,212 INFO  L226             Difference]: Without dead ends: 206
[2020-10-16 11:40:28,212 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702
[2020-10-16 11:40:28,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2020-10-16 11:40:28,216 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136.
[2020-10-16 11:40:28,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 136 states.
[2020-10-16 11:40:28,217 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions.
[2020-10-16 11:40:28,217 INFO  L78                 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13
[2020-10-16 11:40:28,217 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:28,217 INFO  L481      AbstractCegarLoop]: Abstraction has 136 states and 337 transitions.
[2020-10-16 11:40:28,217 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:28,217 INFO  L276                IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions.
[2020-10-16 11:40:28,218 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:28,218 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:28,218 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:28,429 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133
[2020-10-16 11:40:28,430 INFO  L429      AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:28,430 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:28,430 INFO  L82        PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 109 times
[2020-10-16 11:40:28,431 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:28,431 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744561683]
[2020-10-16 11:40:28,431 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:28,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:28,530 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:28,530 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744561683]
[2020-10-16 11:40:28,531 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784023213]
[2020-10-16 11:40:28,531 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:28,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:28,574 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:28,574 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:28,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:28,724 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:28,724 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:28,725 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575701047]
[2020-10-16 11:40:28,725 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:28,725 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:28,725 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:28,725 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:28,726 INFO  L87              Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states.
[2020-10-16 11:40:29,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:29,318 INFO  L93              Difference]: Finished difference Result 215 states and 507 transitions.
[2020-10-16 11:40:29,319 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-10-16 11:40:29,319 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:29,319 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:29,320 INFO  L225             Difference]: With dead ends: 215
[2020-10-16 11:40:29,320 INFO  L226             Difference]: Without dead ends: 213
[2020-10-16 11:40:29,321 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870
[2020-10-16 11:40:29,321 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2020-10-16 11:40:29,323 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137.
[2020-10-16 11:40:29,323 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 137 states.
[2020-10-16 11:40:29,323 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions.
[2020-10-16 11:40:29,324 INFO  L78                 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13
[2020-10-16 11:40:29,324 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:29,324 INFO  L481      AbstractCegarLoop]: Abstraction has 137 states and 341 transitions.
[2020-10-16 11:40:29,324 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:29,324 INFO  L276                IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions.
[2020-10-16 11:40:29,324 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:29,324 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:29,324 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:29,525 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134
[2020-10-16 11:40:29,525 INFO  L429      AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:29,526 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:29,526 INFO  L82        PathProgramCache]: Analyzing trace with hash 1556292882, now seen corresponding path program 110 times
[2020-10-16 11:40:29,526 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:29,526 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208744248]
[2020-10-16 11:40:29,527 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:29,531 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:29,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:29,616 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208744248]
[2020-10-16 11:40:29,616 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472847734]
[2020-10-16 11:40:29,617 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:29,658 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:40:29,658 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:29,659 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:29,661 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:29,767 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:40:29,779 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:29,779 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:29,779 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:29,780 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618823436]
[2020-10-16 11:40:29,780 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:29,780 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:29,781 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:29,781 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:29,781 INFO  L87              Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states.
[2020-10-16 11:40:30,405 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:30,406 INFO  L93              Difference]: Finished difference Result 236 states and 563 transitions.
[2020-10-16 11:40:30,406 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-10-16 11:40:30,406 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:30,406 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:30,407 INFO  L225             Difference]: With dead ends: 236
[2020-10-16 11:40:30,407 INFO  L226             Difference]: Without dead ends: 228
[2020-10-16 11:40:30,407 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 11:40:30,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 228 states.
[2020-10-16 11:40:30,409 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137.
[2020-10-16 11:40:30,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 137 states.
[2020-10-16 11:40:30,410 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions.
[2020-10-16 11:40:30,410 INFO  L78                 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13
[2020-10-16 11:40:30,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:30,410 INFO  L481      AbstractCegarLoop]: Abstraction has 137 states and 341 transitions.
[2020-10-16 11:40:30,411 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:30,411 INFO  L276                IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions.
[2020-10-16 11:40:30,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:30,411 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:30,411 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:30,611 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135
[2020-10-16 11:40:30,612 INFO  L429      AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:30,612 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:30,612 INFO  L82        PathProgramCache]: Analyzing trace with hash 1556293843, now seen corresponding path program 111 times
[2020-10-16 11:40:30,613 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:30,613 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876473129]
[2020-10-16 11:40:30,613 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:30,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:30,709 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:30,709 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876473129]
[2020-10-16 11:40:30,710 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456025955]
[2020-10-16 11:40:30,710 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:30,751 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:40:30,752 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:30,753 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:30,754 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:30,894 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:40:30,906 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:30,906 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:30,907 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:30,907 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880538615]
[2020-10-16 11:40:30,907 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:30,908 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:30,908 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:30,908 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:30,908 INFO  L87              Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states.
[2020-10-16 11:40:31,642 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:31,642 INFO  L93              Difference]: Finished difference Result 241 states and 576 transitions.
[2020-10-16 11:40:31,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-10-16 11:40:31,643 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:31,643 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:31,643 INFO  L225             Difference]: With dead ends: 241
[2020-10-16 11:40:31,644 INFO  L226             Difference]: Without dead ends: 233
[2020-10-16 11:40:31,644 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 11:40:31,644 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2020-10-16 11:40:31,647 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133.
[2020-10-16 11:40:31,647 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 133 states.
[2020-10-16 11:40:31,647 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions.
[2020-10-16 11:40:31,647 INFO  L78                 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13
[2020-10-16 11:40:31,647 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:31,648 INFO  L481      AbstractCegarLoop]: Abstraction has 133 states and 324 transitions.
[2020-10-16 11:40:31,648 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:31,648 INFO  L276                IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions.
[2020-10-16 11:40:31,648 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:31,648 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:31,648 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:31,856 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136
[2020-10-16 11:40:31,857 INFO  L429      AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:31,857 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:31,857 INFO  L82        PathProgramCache]: Analyzing trace with hash 1556322673, now seen corresponding path program 112 times
[2020-10-16 11:40:31,858 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:31,858 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668782958]
[2020-10-16 11:40:31,858 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:31,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:31,954 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:31,955 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668782958]
[2020-10-16 11:40:31,955 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032222653]
[2020-10-16 11:40:31,955 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:31,997 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:40:31,998 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:31,998 INFO  L263         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-16 11:40:31,999 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:32,127 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:40:32,141 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:32,141 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:32,142 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2020-10-16 11:40:32,142 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221334210]
[2020-10-16 11:40:32,142 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:40:32,142 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:32,143 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:40:32,143 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:40:32,143 INFO  L87              Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states.
[2020-10-16 11:40:32,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:32,883 INFO  L93              Difference]: Finished difference Result 232 states and 545 transitions.
[2020-10-16 11:40:32,884 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-10-16 11:40:32,884 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 13
[2020-10-16 11:40:32,884 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:32,885 INFO  L225             Difference]: With dead ends: 232
[2020-10-16 11:40:32,885 INFO  L226             Difference]: Without dead ends: 224
[2020-10-16 11:40:32,886 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056
[2020-10-16 11:40:32,886 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 224 states.
[2020-10-16 11:40:32,889 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130.
[2020-10-16 11:40:32,889 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 130 states.
[2020-10-16 11:40:32,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions.
[2020-10-16 11:40:32,890 INFO  L78                 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13
[2020-10-16 11:40:32,890 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:32,890 INFO  L481      AbstractCegarLoop]: Abstraction has 130 states and 305 transitions.
[2020-10-16 11:40:32,890 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:40:32,890 INFO  L276                IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions.
[2020-10-16 11:40:32,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:32,891 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:32,891 INFO  L422         BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:33,100 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:33,101 INFO  L429      AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:33,101 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:33,101 INFO  L82        PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times
[2020-10-16 11:40:33,101 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:33,102 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956921350]
[2020-10-16 11:40:33,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:33,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:33,229 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:33,229 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956921350]
[2020-10-16 11:40:33,230 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605122687]
[2020-10-16 11:40:33,230 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:33,272 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2020-10-16 11:40:33,272 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:33,273 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:33,274 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:33,488 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-10-16 11:40:33,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:33,525 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:33,525 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16
[2020-10-16 11:40:33,525 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570605011]
[2020-10-16 11:40:33,525 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-16 11:40:33,525 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:33,526 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-16 11:40:33,526 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:40:33,526 INFO  L87              Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states.
[2020-10-16 11:40:33,868 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:33,868 INFO  L93              Difference]: Finished difference Result 185 states and 431 transitions.
[2020-10-16 11:40:33,870 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-16 11:40:33,870 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states. Word has length 13
[2020-10-16 11:40:33,870 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:33,871 INFO  L225             Difference]: With dead ends: 185
[2020-10-16 11:40:33,871 INFO  L226             Difference]: Without dead ends: 180
[2020-10-16 11:40:33,872 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:40:33,873 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 180 states.
[2020-10-16 11:40:33,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139.
[2020-10-16 11:40:33,876 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 139 states.
[2020-10-16 11:40:33,876 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions.
[2020-10-16 11:40:33,877 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13
[2020-10-16 11:40:33,877 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:33,877 INFO  L481      AbstractCegarLoop]: Abstraction has 139 states and 341 transitions.
[2020-10-16 11:40:33,877 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-16 11:40:33,877 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions.
[2020-10-16 11:40:33,878 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:33,878 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:33,878 INFO  L422         BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:34,091 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138
[2020-10-16 11:40:34,091 INFO  L429      AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:34,092 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:34,092 INFO  L82        PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 21 times
[2020-10-16 11:40:34,093 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:34,093 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943355744]
[2020-10-16 11:40:34,093 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:34,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:34,334 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:34,334 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943355744]
[2020-10-16 11:40:34,335 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90832343]
[2020-10-16 11:40:34,335 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:34,385 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2020-10-16 11:40:34,385 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:34,386 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:34,387 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:34,621 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:34,622 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:34,622 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:34,622 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668765038]
[2020-10-16 11:40:34,623 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:34,623 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:34,623 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:34,623 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:34,623 INFO  L87              Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 17 states.
[2020-10-16 11:40:34,678 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:34,678 INFO  L93              Difference]: Finished difference Result 180 states and 423 transitions.
[2020-10-16 11:40:34,679 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:40:34,679 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 13
[2020-10-16 11:40:34,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:34,680 INFO  L225             Difference]: With dead ends: 180
[2020-10-16 11:40:34,680 INFO  L226             Difference]: Without dead ends: 177
[2020-10-16 11:40:34,681 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:34,681 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2020-10-16 11:40:34,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148.
[2020-10-16 11:40:34,683 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 148 states.
[2020-10-16 11:40:34,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions.
[2020-10-16 11:40:34,683 INFO  L78                 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13
[2020-10-16 11:40:34,684 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:34,684 INFO  L481      AbstractCegarLoop]: Abstraction has 148 states and 362 transitions.
[2020-10-16 11:40:34,684 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:34,684 INFO  L276                IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions.
[2020-10-16 11:40:34,684 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:34,684 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:34,684 INFO  L422         BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:34,885 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139
[2020-10-16 11:40:34,885 INFO  L429      AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:34,886 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:34,886 INFO  L82        PathProgramCache]: Analyzing trace with hash 1413108102, now seen corresponding path program 22 times
[2020-10-16 11:40:34,886 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:34,886 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236320955]
[2020-10-16 11:40:34,887 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:34,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:35,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:35,066 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236320955]
[2020-10-16 11:40:35,067 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547553910]
[2020-10-16 11:40:35,067 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:35,107 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:40:35,107 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:35,108 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:35,109 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:35,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:35,312 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:35,312 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:35,312 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863852343]
[2020-10-16 11:40:35,312 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:35,313 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:35,313 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:35,313 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:35,313 INFO  L87              Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states.
[2020-10-16 11:40:35,405 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:35,405 INFO  L93              Difference]: Finished difference Result 197 states and 456 transitions.
[2020-10-16 11:40:35,406 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:40:35,406 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 13
[2020-10-16 11:40:35,406 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:35,406 INFO  L225             Difference]: With dead ends: 197
[2020-10-16 11:40:35,407 INFO  L226             Difference]: Without dead ends: 194
[2020-10-16 11:40:35,407 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:40:35,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 194 states.
[2020-10-16 11:40:35,409 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 148.
[2020-10-16 11:40:35,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 148 states.
[2020-10-16 11:40:35,410 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions.
[2020-10-16 11:40:35,410 INFO  L78                 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13
[2020-10-16 11:40:35,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:35,410 INFO  L481      AbstractCegarLoop]: Abstraction has 148 states and 362 transitions.
[2020-10-16 11:40:35,410 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:35,410 INFO  L276                IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions.
[2020-10-16 11:40:35,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:35,411 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:35,411 INFO  L422         BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:35,620 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:35,621 INFO  L429      AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:35,621 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:35,621 INFO  L82        PathProgramCache]: Analyzing trace with hash 551260342, now seen corresponding path program 23 times
[2020-10-16 11:40:35,622 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:35,622 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318658474]
[2020-10-16 11:40:35,622 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:35,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:35,800 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:35,800 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318658474]
[2020-10-16 11:40:35,800 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590579501]
[2020-10-16 11:40:35,800 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:35,856 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2020-10-16 11:40:35,857 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:35,858 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:35,859 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:36,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:36,084 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:36,084 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:36,084 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888203910]
[2020-10-16 11:40:36,084 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:36,085 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:36,085 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:36,085 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:36,085 INFO  L87              Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states.
[2020-10-16 11:40:36,196 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:36,196 INFO  L93              Difference]: Finished difference Result 196 states and 456 transitions.
[2020-10-16 11:40:36,197 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:40:36,197 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 13
[2020-10-16 11:40:36,197 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:36,197 INFO  L225             Difference]: With dead ends: 196
[2020-10-16 11:40:36,198 INFO  L226             Difference]: Without dead ends: 193
[2020-10-16 11:40:36,198 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342
[2020-10-16 11:40:36,198 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2020-10-16 11:40:36,200 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149.
[2020-10-16 11:40:36,200 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 149 states.
[2020-10-16 11:40:36,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 367 transitions.
[2020-10-16 11:40:36,201 INFO  L78                 Accepts]: Start accepts. Automaton has 149 states and 367 transitions. Word has length 13
[2020-10-16 11:40:36,201 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:36,201 INFO  L481      AbstractCegarLoop]: Abstraction has 149 states and 367 transitions.
[2020-10-16 11:40:36,201 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:36,201 INFO  L276                IsEmpty]: Start isEmpty. Operand 149 states and 367 transitions.
[2020-10-16 11:40:36,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:36,201 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:36,202 INFO  L422         BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:36,402 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:36,402 INFO  L429      AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:36,403 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:36,403 INFO  L82        PathProgramCache]: Analyzing trace with hash 1216195462, now seen corresponding path program 24 times
[2020-10-16 11:40:36,403 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:36,403 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579480629]
[2020-10-16 11:40:36,404 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:36,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:36,540 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:36,540 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579480629]
[2020-10-16 11:40:36,541 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865196587]
[2020-10-16 11:40:36,541 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:36,580 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2020-10-16 11:40:36,581 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:36,582 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:36,583 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:36,763 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:36,763 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:36,763 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:36,764 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460018543]
[2020-10-16 11:40:36,764 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:36,764 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:36,764 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:36,765 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:36,765 INFO  L87              Difference]: Start difference. First operand 149 states and 367 transitions. Second operand 17 states.
[2020-10-16 11:40:36,908 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:36,908 INFO  L93              Difference]: Finished difference Result 195 states and 456 transitions.
[2020-10-16 11:40:36,909 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:40:36,909 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 13
[2020-10-16 11:40:36,909 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:36,910 INFO  L225             Difference]: With dead ends: 195
[2020-10-16 11:40:36,910 INFO  L226             Difference]: Without dead ends: 192
[2020-10-16 11:40:36,910 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380
[2020-10-16 11:40:36,911 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2020-10-16 11:40:36,912 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 150.
[2020-10-16 11:40:36,913 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 150 states.
[2020-10-16 11:40:36,913 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 372 transitions.
[2020-10-16 11:40:36,913 INFO  L78                 Accepts]: Start accepts. Automaton has 150 states and 372 transitions. Word has length 13
[2020-10-16 11:40:36,913 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:36,913 INFO  L481      AbstractCegarLoop]: Abstraction has 150 states and 372 transitions.
[2020-10-16 11:40:36,913 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:36,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 150 states and 372 transitions.
[2020-10-16 11:40:36,914 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:36,914 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:36,914 INFO  L422         BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:37,114 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:37,115 INFO  L429      AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:37,115 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:37,115 INFO  L82        PathProgramCache]: Analyzing trace with hash 1237644982, now seen corresponding path program 25 times
[2020-10-16 11:40:37,115 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:37,116 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217043006]
[2020-10-16 11:40:37,116 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:37,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:37,244 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:37,245 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217043006]
[2020-10-16 11:40:37,245 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65699043]
[2020-10-16 11:40:37,245 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:37,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:37,286 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:37,286 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:37,490 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:37,490 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:37,490 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:37,491 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063789330]
[2020-10-16 11:40:37,491 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:37,491 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:37,491 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:37,491 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:37,491 INFO  L87              Difference]: Start difference. First operand 150 states and 372 transitions. Second operand 17 states.
[2020-10-16 11:40:37,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:37,689 INFO  L93              Difference]: Finished difference Result 194 states and 456 transitions.
[2020-10-16 11:40:37,690 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-16 11:40:37,690 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 13
[2020-10-16 11:40:37,690 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:37,691 INFO  L225             Difference]: With dead ends: 194
[2020-10-16 11:40:37,691 INFO  L226             Difference]: Without dead ends: 191
[2020-10-16 11:40:37,692 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420
[2020-10-16 11:40:37,692 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 191 states.
[2020-10-16 11:40:37,694 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 152.
[2020-10-16 11:40:37,695 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 152 states.
[2020-10-16 11:40:37,695 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 379 transitions.
[2020-10-16 11:40:37,695 INFO  L78                 Accepts]: Start accepts. Automaton has 152 states and 379 transitions. Word has length 13
[2020-10-16 11:40:37,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:37,696 INFO  L481      AbstractCegarLoop]: Abstraction has 152 states and 379 transitions.
[2020-10-16 11:40:37,696 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:37,696 INFO  L276                IsEmpty]: Start isEmpty. Operand 152 states and 379 transitions.
[2020-10-16 11:40:37,696 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:37,696 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:37,696 INFO  L422         BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:37,897 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:37,897 INFO  L429      AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:37,898 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:37,898 INFO  L82        PathProgramCache]: Analyzing trace with hash 1238336902, now seen corresponding path program 26 times
[2020-10-16 11:40:37,898 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:37,899 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989460155]
[2020-10-16 11:40:37,899 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:37,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:38,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:38,028 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989460155]
[2020-10-16 11:40:38,029 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232986099]
[2020-10-16 11:40:38,029 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:38,069 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:40:38,070 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:38,071 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:38,071 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:38,276 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:38,276 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:38,277 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:38,277 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179301045]
[2020-10-16 11:40:38,277 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:38,277 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:38,278 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:38,278 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:38,278 INFO  L87              Difference]: Start difference. First operand 152 states and 379 transitions. Second operand 17 states.
[2020-10-16 11:40:38,502 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:38,502 INFO  L93              Difference]: Finished difference Result 193 states and 456 transitions.
[2020-10-16 11:40:38,502 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:40:38,503 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 13
[2020-10-16 11:40:38,503 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:38,503 INFO  L225             Difference]: With dead ends: 193
[2020-10-16 11:40:38,503 INFO  L226             Difference]: Without dead ends: 190
[2020-10-16 11:40:38,504 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:40:38,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 190 states.
[2020-10-16 11:40:38,506 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154.
[2020-10-16 11:40:38,506 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 154 states.
[2020-10-16 11:40:38,507 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 386 transitions.
[2020-10-16 11:40:38,507 INFO  L78                 Accepts]: Start accepts. Automaton has 154 states and 386 transitions. Word has length 13
[2020-10-16 11:40:38,507 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:38,507 INFO  L481      AbstractCegarLoop]: Abstraction has 154 states and 386 transitions.
[2020-10-16 11:40:38,507 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:38,507 INFO  L276                IsEmpty]: Start isEmpty. Operand 154 states and 386 transitions.
[2020-10-16 11:40:38,507 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-16 11:40:38,507 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:38,507 INFO  L422         BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:38,708 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144
[2020-10-16 11:40:38,708 INFO  L429      AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:38,709 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:38,709 INFO  L82        PathProgramCache]: Analyzing trace with hash 1238359222, now seen corresponding path program 27 times
[2020-10-16 11:40:38,709 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:38,709 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292063762]
[2020-10-16 11:40:38,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:38,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:38,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:38,824 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292063762]
[2020-10-16 11:40:38,824 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983844836]
[2020-10-16 11:40:38,824 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:38,874 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2020-10-16 11:40:38,874 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:38,875 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:38,875 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:39,050 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-10-16 11:40:39,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:39,066 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:39,067 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:39,067 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903874021]
[2020-10-16 11:40:39,067 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:39,067 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:39,068 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:39,068 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:39,068 INFO  L87              Difference]: Start difference. First operand 154 states and 386 transitions. Second operand 17 states.
[2020-10-16 11:40:39,360 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:39,360 INFO  L93              Difference]: Finished difference Result 202 states and 480 transitions.
[2020-10-16 11:40:39,361 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-16 11:40:39,361 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 13
[2020-10-16 11:40:39,361 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:39,362 INFO  L225             Difference]: With dead ends: 202
[2020-10-16 11:40:39,362 INFO  L226             Difference]: Without dead ends: 196
[2020-10-16 11:40:39,362 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:40:39,364 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 196 states.
[2020-10-16 11:40:39,366 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151.
[2020-10-16 11:40:39,366 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 151 states.
[2020-10-16 11:40:39,366 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions.
[2020-10-16 11:40:39,367 INFO  L78                 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 13
[2020-10-16 11:40:39,367 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:39,367 INFO  L481      AbstractCegarLoop]: Abstraction has 151 states and 382 transitions.
[2020-10-16 11:40:39,367 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:39,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions.
[2020-10-16 11:40:39,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:39,368 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:39,368 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:39,576 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145
[2020-10-16 11:40:39,577 INFO  L429      AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:39,577 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:39,577 INFO  L82        PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 113 times
[2020-10-16 11:40:39,577 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:39,578 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466237099]
[2020-10-16 11:40:39,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:39,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:39,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:39,716 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466237099]
[2020-10-16 11:40:39,716 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746274287]
[2020-10-16 11:40:39,716 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:39,768 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:40:39,768 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:39,769 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:39,769 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:39,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:39,974 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:39,974 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:39,974 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059910759]
[2020-10-16 11:40:39,975 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:39,975 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:39,975 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:39,975 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:39,975 INFO  L87              Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 17 states.
[2020-10-16 11:40:40,049 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:40,049 INFO  L93              Difference]: Finished difference Result 188 states and 456 transitions.
[2020-10-16 11:40:40,050 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-16 11:40:40,050 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:40,050 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:40,051 INFO  L225             Difference]: With dead ends: 188
[2020-10-16 11:40:40,051 INFO  L226             Difference]: Without dead ends: 186
[2020-10-16 11:40:40,051 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:40,052 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 186 states.
[2020-10-16 11:40:40,053 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159.
[2020-10-16 11:40:40,054 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 159 states.
[2020-10-16 11:40:40,054 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 406 transitions.
[2020-10-16 11:40:40,054 INFO  L78                 Accepts]: Start accepts. Automaton has 159 states and 406 transitions. Word has length 14
[2020-10-16 11:40:40,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:40,054 INFO  L481      AbstractCegarLoop]: Abstraction has 159 states and 406 transitions.
[2020-10-16 11:40:40,055 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:40,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 159 states and 406 transitions.
[2020-10-16 11:40:40,055 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:40,055 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:40,055 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:40,256 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146
[2020-10-16 11:40:40,256 INFO  L429      AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:40,256 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:40,256 INFO  L82        PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 114 times
[2020-10-16 11:40:40,257 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:40,257 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510693926]
[2020-10-16 11:40:40,257 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:40,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:40,383 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:40,383 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510693926]
[2020-10-16 11:40:40,383 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103374029]
[2020-10-16 11:40:40,383 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:40,424 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:40:40,424 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:40,425 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:40,425 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:40,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:40,615 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:40,615 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:40,615 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064745081]
[2020-10-16 11:40:40,616 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:40,616 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:40,616 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:40,616 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:40,617 INFO  L87              Difference]: Start difference. First operand 159 states and 406 transitions. Second operand 17 states.
[2020-10-16 11:40:40,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:40,874 INFO  L93              Difference]: Finished difference Result 199 states and 478 transitions.
[2020-10-16 11:40:40,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:40:40,875 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:40,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:40,876 INFO  L225             Difference]: With dead ends: 199
[2020-10-16 11:40:40,876 INFO  L226             Difference]: Without dead ends: 197
[2020-10-16 11:40:40,876 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:40:40,876 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 197 states.
[2020-10-16 11:40:40,878 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 157.
[2020-10-16 11:40:40,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 157 states.
[2020-10-16 11:40:40,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions.
[2020-10-16 11:40:40,879 INFO  L78                 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14
[2020-10-16 11:40:40,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:40,879 INFO  L481      AbstractCegarLoop]: Abstraction has 157 states and 400 transitions.
[2020-10-16 11:40:40,879 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:40,879 INFO  L276                IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions.
[2020-10-16 11:40:40,880 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:40,880 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:40,880 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:41,080 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147
[2020-10-16 11:40:41,081 INFO  L429      AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:41,081 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:41,081 INFO  L82        PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 115 times
[2020-10-16 11:40:41,082 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:41,082 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775347143]
[2020-10-16 11:40:41,082 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:41,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:41,203 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:41,204 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775347143]
[2020-10-16 11:40:41,204 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732884317]
[2020-10-16 11:40:41,204 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:41,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:41,250 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:41,250 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:41,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:41,523 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:41,523 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:41,523 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888452188]
[2020-10-16 11:40:41,523 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:41,523 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:41,523 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:41,523 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:41,523 INFO  L87              Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states.
[2020-10-16 11:40:41,857 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:41,857 INFO  L93              Difference]: Finished difference Result 210 states and 500 transitions.
[2020-10-16 11:40:41,858 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:40:41,858 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:41,858 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:41,858 INFO  L225             Difference]: With dead ends: 210
[2020-10-16 11:40:41,858 INFO  L226             Difference]: Without dead ends: 208
[2020-10-16 11:40:41,859 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:40:41,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 208 states.
[2020-10-16 11:40:41,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 155.
[2020-10-16 11:40:41,861 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 155 states.
[2020-10-16 11:40:41,861 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 394 transitions.
[2020-10-16 11:40:41,861 INFO  L78                 Accepts]: Start accepts. Automaton has 155 states and 394 transitions. Word has length 14
[2020-10-16 11:40:41,861 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:41,861 INFO  L481      AbstractCegarLoop]: Abstraction has 155 states and 394 transitions.
[2020-10-16 11:40:41,862 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:41,862 INFO  L276                IsEmpty]: Start isEmpty. Operand 155 states and 394 transitions.
[2020-10-16 11:40:41,862 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:41,862 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:41,862 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:42,063 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148
[2020-10-16 11:40:42,063 INFO  L429      AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:42,063 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:42,064 INFO  L82        PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 116 times
[2020-10-16 11:40:42,064 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:42,064 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581692555]
[2020-10-16 11:40:42,064 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:42,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:42,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:42,185 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581692555]
[2020-10-16 11:40:42,185 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431569593]
[2020-10-16 11:40:42,185 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:42,224 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:40:42,224 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:42,225 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:42,226 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:42,484 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:42,485 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:42,485 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:42,485 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97082024]
[2020-10-16 11:40:42,485 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:42,486 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:42,486 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:42,486 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:42,486 INFO  L87              Difference]: Start difference. First operand 155 states and 394 transitions. Second operand 17 states.
[2020-10-16 11:40:42,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:42,847 INFO  L93              Difference]: Finished difference Result 210 states and 500 transitions.
[2020-10-16 11:40:42,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:40:42,848 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:42,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:42,848 INFO  L225             Difference]: With dead ends: 210
[2020-10-16 11:40:42,849 INFO  L226             Difference]: Without dead ends: 208
[2020-10-16 11:40:42,849 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:40:42,849 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 208 states.
[2020-10-16 11:40:42,851 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157.
[2020-10-16 11:40:42,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 157 states.
[2020-10-16 11:40:42,852 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions.
[2020-10-16 11:40:42,853 INFO  L78                 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14
[2020-10-16 11:40:42,853 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:42,853 INFO  L481      AbstractCegarLoop]: Abstraction has 157 states and 400 transitions.
[2020-10-16 11:40:42,853 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:42,853 INFO  L276                IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions.
[2020-10-16 11:40:42,853 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:42,853 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:42,854 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:43,057 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149
[2020-10-16 11:40:43,057 INFO  L429      AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:43,057 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:43,058 INFO  L82        PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 117 times
[2020-10-16 11:40:43,058 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:43,058 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618828081]
[2020-10-16 11:40:43,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:43,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:43,180 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:43,180 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618828081]
[2020-10-16 11:40:43,180 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181164843]
[2020-10-16 11:40:43,181 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:43,229 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-10-16 11:40:43,229 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:43,230 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:43,231 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:47,251 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:47,251 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:47,251 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:47,252 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192105567]
[2020-10-16 11:40:47,252 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:47,252 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:47,252 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:47,252 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272
[2020-10-16 11:40:47,252 INFO  L87              Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states.
[2020-10-16 11:40:51,481 WARN  L193               SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37
[2020-10-16 11:40:51,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:51,810 INFO  L93              Difference]: Finished difference Result 218 states and 517 transitions.
[2020-10-16 11:40:51,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-16 11:40:51,811 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:51,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:51,813 INFO  L225             Difference]: With dead ends: 218
[2020-10-16 11:40:51,813 INFO  L226             Difference]: Without dead ends: 216
[2020-10-16 11:40:51,814 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552
[2020-10-16 11:40:51,815 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 216 states.
[2020-10-16 11:40:51,817 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156.
[2020-10-16 11:40:51,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 156 states.
[2020-10-16 11:40:51,818 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions.
[2020-10-16 11:40:51,818 INFO  L78                 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14
[2020-10-16 11:40:51,818 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:51,819 INFO  L481      AbstractCegarLoop]: Abstraction has 156 states and 397 transitions.
[2020-10-16 11:40:51,819 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:51,819 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions.
[2020-10-16 11:40:51,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:51,819 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:51,819 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:52,020 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:52,020 INFO  L429      AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:52,021 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:52,021 INFO  L82        PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 118 times
[2020-10-16 11:40:52,021 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:52,021 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135266240]
[2020-10-16 11:40:52,022 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:52,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:52,155 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:52,156 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135266240]
[2020-10-16 11:40:52,156 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562801011]
[2020-10-16 11:40:52,156 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:52,198 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:40:52,199 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:52,199 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:52,200 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:53,214 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:53,215 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:53,215 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:53,215 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248316818]
[2020-10-16 11:40:53,216 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:53,216 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:53,216 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:53,216 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:53,216 INFO  L87              Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states.
[2020-10-16 11:40:53,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:53,653 INFO  L93              Difference]: Finished difference Result 212 states and 507 transitions.
[2020-10-16 11:40:53,654 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-16 11:40:53,654 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:53,654 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:53,655 INFO  L225             Difference]: With dead ends: 212
[2020-10-16 11:40:53,655 INFO  L226             Difference]: Without dead ends: 210
[2020-10-16 11:40:53,655 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:40:53,656 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 210 states.
[2020-10-16 11:40:53,659 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153.
[2020-10-16 11:40:53,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 153 states.
[2020-10-16 11:40:53,660 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 388 transitions.
[2020-10-16 11:40:53,660 INFO  L78                 Accepts]: Start accepts. Automaton has 153 states and 388 transitions. Word has length 14
[2020-10-16 11:40:53,660 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:53,660 INFO  L481      AbstractCegarLoop]: Abstraction has 153 states and 388 transitions.
[2020-10-16 11:40:53,660 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:53,660 INFO  L276                IsEmpty]: Start isEmpty. Operand 153 states and 388 transitions.
[2020-10-16 11:40:53,661 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:53,661 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:53,661 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:53,872 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:53,873 INFO  L429      AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:53,873 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:53,873 INFO  L82        PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 119 times
[2020-10-16 11:40:53,873 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:53,880 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225321296]
[2020-10-16 11:40:53,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:53,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:54,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:54,008 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225321296]
[2020-10-16 11:40:54,009 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917024413]
[2020-10-16 11:40:54,009 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:54,060 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:40:54,060 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:54,061 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:54,061 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:54,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:54,263 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:54,264 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:54,264 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983879014]
[2020-10-16 11:40:54,264 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:54,264 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:54,265 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:54,265 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:54,265 INFO  L87              Difference]: Start difference. First operand 153 states and 388 transitions. Second operand 17 states.
[2020-10-16 11:40:54,645 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:54,645 INFO  L93              Difference]: Finished difference Result 212 states and 504 transitions.
[2020-10-16 11:40:54,646 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-16 11:40:54,646 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:54,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:54,646 INFO  L225             Difference]: With dead ends: 212
[2020-10-16 11:40:54,646 INFO  L226             Difference]: Without dead ends: 210
[2020-10-16 11:40:54,647 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650
[2020-10-16 11:40:54,647 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 210 states.
[2020-10-16 11:40:54,649 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156.
[2020-10-16 11:40:54,649 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 156 states.
[2020-10-16 11:40:54,650 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions.
[2020-10-16 11:40:54,650 INFO  L78                 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14
[2020-10-16 11:40:54,650 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:54,650 INFO  L481      AbstractCegarLoop]: Abstraction has 156 states and 397 transitions.
[2020-10-16 11:40:54,650 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:54,650 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions.
[2020-10-16 11:40:54,650 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:54,650 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:54,651 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:54,851 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:54,852 INFO  L429      AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:54,852 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:54,852 INFO  L82        PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 120 times
[2020-10-16 11:40:54,852 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:54,853 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896686370]
[2020-10-16 11:40:54,853 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:54,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:54,976 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:54,976 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896686370]
[2020-10-16 11:40:54,976 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050964744]
[2020-10-16 11:40:54,976 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:55,017 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-10-16 11:40:55,018 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:55,018 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:55,019 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:55,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:55,213 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:55,214 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:55,214 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756821973]
[2020-10-16 11:40:55,214 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:55,214 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:55,215 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:55,215 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:55,215 INFO  L87              Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states.
[2020-10-16 11:40:55,619 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:55,619 INFO  L93              Difference]: Finished difference Result 224 states and 529 transitions.
[2020-10-16 11:40:55,623 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:40:55,623 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:55,623 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:55,624 INFO  L225             Difference]: With dead ends: 224
[2020-10-16 11:40:55,624 INFO  L226             Difference]: Without dead ends: 222
[2020-10-16 11:40:55,624 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650
[2020-10-16 11:40:55,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 222 states.
[2020-10-16 11:40:55,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 156.
[2020-10-16 11:40:55,626 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 156 states.
[2020-10-16 11:40:55,627 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions.
[2020-10-16 11:40:55,627 INFO  L78                 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14
[2020-10-16 11:40:55,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:55,627 INFO  L481      AbstractCegarLoop]: Abstraction has 156 states and 397 transitions.
[2020-10-16 11:40:55,627 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:55,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions.
[2020-10-16 11:40:55,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:55,628 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:55,628 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:55,830 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:55,830 INFO  L429      AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:55,831 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:55,831 INFO  L82        PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 121 times
[2020-10-16 11:40:55,831 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:55,831 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537193859]
[2020-10-16 11:40:55,832 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:55,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:55,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:55,953 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537193859]
[2020-10-16 11:40:55,953 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373495748]
[2020-10-16 11:40:55,953 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:55,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:55,992 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:55,993 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:56,196 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:56,196 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:56,196 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:56,197 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949648866]
[2020-10-16 11:40:56,197 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:56,197 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:56,197 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:56,198 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:56,198 INFO  L87              Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states.
[2020-10-16 11:40:56,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:56,573 INFO  L93              Difference]: Finished difference Result 218 states and 519 transitions.
[2020-10-16 11:40:56,574 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:40:56,574 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:56,574 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:56,575 INFO  L225             Difference]: With dead ends: 218
[2020-10-16 11:40:56,575 INFO  L226             Difference]: Without dead ends: 216
[2020-10-16 11:40:56,576 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:40:56,576 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 216 states.
[2020-10-16 11:40:56,579 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156.
[2020-10-16 11:40:56,579 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 156 states.
[2020-10-16 11:40:56,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions.
[2020-10-16 11:40:56,579 INFO  L78                 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14
[2020-10-16 11:40:56,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:56,580 INFO  L481      AbstractCegarLoop]: Abstraction has 156 states and 397 transitions.
[2020-10-16 11:40:56,580 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:56,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions.
[2020-10-16 11:40:56,580 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:56,580 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:56,580 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:56,781 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:56,781 INFO  L429      AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:56,781 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:56,782 INFO  L82        PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 122 times
[2020-10-16 11:40:56,782 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:56,782 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107906085]
[2020-10-16 11:40:56,782 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:56,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:56,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:56,913 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107906085]
[2020-10-16 11:40:56,913 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443458218]
[2020-10-16 11:40:56,914 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:56,954 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:40:56,954 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:56,955 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:56,956 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:57,152 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:57,153 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:57,153 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:57,153 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975093688]
[2020-10-16 11:40:57,153 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:57,154 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:57,154 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:57,154 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:57,154 INFO  L87              Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states.
[2020-10-16 11:40:57,473 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:57,474 INFO  L93              Difference]: Finished difference Result 206 states and 492 transitions.
[2020-10-16 11:40:57,474 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:40:57,474 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:57,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:57,475 INFO  L225             Difference]: With dead ends: 206
[2020-10-16 11:40:57,475 INFO  L226             Difference]: Without dead ends: 204
[2020-10-16 11:40:57,475 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:40:57,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204 states.
[2020-10-16 11:40:57,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 154.
[2020-10-16 11:40:57,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 154 states.
[2020-10-16 11:40:57,478 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions.
[2020-10-16 11:40:57,478 INFO  L78                 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14
[2020-10-16 11:40:57,478 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:57,479 INFO  L481      AbstractCegarLoop]: Abstraction has 154 states and 389 transitions.
[2020-10-16 11:40:57,479 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:57,479 INFO  L276                IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions.
[2020-10-16 11:40:57,479 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:57,479 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:57,479 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:57,680 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155
[2020-10-16 11:40:57,680 INFO  L429      AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:57,680 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:57,681 INFO  L82        PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 123 times
[2020-10-16 11:40:57,681 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:57,681 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995791341]
[2020-10-16 11:40:57,681 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:57,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:57,825 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:57,825 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995791341]
[2020-10-16 11:40:57,825 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960641236]
[2020-10-16 11:40:57,826 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:57,868 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2020-10-16 11:40:57,869 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:57,869 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:57,870 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:58,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:58,072 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:58,072 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:58,072 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644341930]
[2020-10-16 11:40:58,072 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:58,073 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:58,073 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:58,073 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:58,073 INFO  L87              Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 17 states.
[2020-10-16 11:40:58,390 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:58,390 INFO  L93              Difference]: Finished difference Result 207 states and 495 transitions.
[2020-10-16 11:40:58,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:40:58,391 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:58,391 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:58,391 INFO  L225             Difference]: With dead ends: 207
[2020-10-16 11:40:58,392 INFO  L226             Difference]: Without dead ends: 205
[2020-10-16 11:40:58,392 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:40:58,392 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 205 states.
[2020-10-16 11:40:58,394 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159.
[2020-10-16 11:40:58,394 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 159 states.
[2020-10-16 11:40:58,394 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 403 transitions.
[2020-10-16 11:40:58,394 INFO  L78                 Accepts]: Start accepts. Automaton has 159 states and 403 transitions. Word has length 14
[2020-10-16 11:40:58,394 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:58,395 INFO  L481      AbstractCegarLoop]: Abstraction has 159 states and 403 transitions.
[2020-10-16 11:40:58,395 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:58,395 INFO  L276                IsEmpty]: Start isEmpty. Operand 159 states and 403 transitions.
[2020-10-16 11:40:58,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:58,395 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:58,395 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:58,595 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156
[2020-10-16 11:40:58,596 INFO  L429      AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:58,596 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:58,596 INFO  L82        PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 124 times
[2020-10-16 11:40:58,597 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:58,597 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385351497]
[2020-10-16 11:40:58,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:58,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:58,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:58,731 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385351497]
[2020-10-16 11:40:58,731 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139295996]
[2020-10-16 11:40:58,731 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:58,774 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:40:58,774 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:58,775 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:58,775 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:58,979 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:58,979 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:58,980 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:58,980 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501671546]
[2020-10-16 11:40:58,980 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:58,980 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:58,980 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:58,981 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:58,981 INFO  L87              Difference]: Start difference. First operand 159 states and 403 transitions. Second operand 17 states.
[2020-10-16 11:40:59,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:40:59,312 INFO  L93              Difference]: Finished difference Result 217 states and 516 transitions.
[2020-10-16 11:40:59,313 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-16 11:40:59,313 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:40:59,313 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:40:59,313 INFO  L225             Difference]: With dead ends: 217
[2020-10-16 11:40:59,314 INFO  L226             Difference]: Without dead ends: 215
[2020-10-16 11:40:59,314 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:40:59,314 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 215 states.
[2020-10-16 11:40:59,316 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 158.
[2020-10-16 11:40:59,316 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 158 states.
[2020-10-16 11:40:59,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 400 transitions.
[2020-10-16 11:40:59,317 INFO  L78                 Accepts]: Start accepts. Automaton has 158 states and 400 transitions. Word has length 14
[2020-10-16 11:40:59,317 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:40:59,317 INFO  L481      AbstractCegarLoop]: Abstraction has 158 states and 400 transitions.
[2020-10-16 11:40:59,317 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:40:59,317 INFO  L276                IsEmpty]: Start isEmpty. Operand 158 states and 400 transitions.
[2020-10-16 11:40:59,318 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:40:59,318 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:40:59,318 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:40:59,518 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157
[2020-10-16 11:40:59,519 INFO  L429      AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:40:59,519 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:40:59,519 INFO  L82        PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 125 times
[2020-10-16 11:40:59,519 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:40:59,520 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392900002]
[2020-10-16 11:40:59,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:40:59,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:40:59,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:59,658 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392900002]
[2020-10-16 11:40:59,658 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064011224]
[2020-10-16 11:40:59,658 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:40:59,700 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:40:59,701 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:40:59,701 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:40:59,702 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:40:59,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:40:59,978 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:40:59,978 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:40:59,978 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834495313]
[2020-10-16 11:40:59,979 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:40:59,979 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:40:59,979 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:40:59,979 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:40:59,979 INFO  L87              Difference]: Start difference. First operand 158 states and 400 transitions. Second operand 17 states.
[2020-10-16 11:41:00,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:00,428 INFO  L93              Difference]: Finished difference Result 223 states and 528 transitions.
[2020-10-16 11:41:00,429 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:41:00,429 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:00,429 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:00,430 INFO  L225             Difference]: With dead ends: 223
[2020-10-16 11:41:00,430 INFO  L226             Difference]: Without dead ends: 221
[2020-10-16 11:41:00,430 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:41:00,431 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 221 states.
[2020-10-16 11:41:00,433 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 162.
[2020-10-16 11:41:00,433 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 162 states.
[2020-10-16 11:41:00,434 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 411 transitions.
[2020-10-16 11:41:00,434 INFO  L78                 Accepts]: Start accepts. Automaton has 162 states and 411 transitions. Word has length 14
[2020-10-16 11:41:00,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:00,434 INFO  L481      AbstractCegarLoop]: Abstraction has 162 states and 411 transitions.
[2020-10-16 11:41:00,434 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:00,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 162 states and 411 transitions.
[2020-10-16 11:41:00,435 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:00,435 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:00,435 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:00,635 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158
[2020-10-16 11:41:00,636 INFO  L429      AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:00,636 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:00,636 INFO  L82        PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 126 times
[2020-10-16 11:41:00,637 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:00,637 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534945844]
[2020-10-16 11:41:00,637 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:00,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:00,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:00,781 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534945844]
[2020-10-16 11:41:00,781 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095957621]
[2020-10-16 11:41:00,781 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:00,821 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:41:00,822 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:00,823 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:00,823 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:01,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:01,020 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:01,020 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:01,020 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601162141]
[2020-10-16 11:41:01,020 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:01,020 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:01,021 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:01,021 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:01,021 INFO  L87              Difference]: Start difference. First operand 162 states and 411 transitions. Second operand 17 states.
[2020-10-16 11:41:01,382 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:01,383 INFO  L93              Difference]: Finished difference Result 225 states and 531 transitions.
[2020-10-16 11:41:01,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:41:01,384 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:01,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:01,385 INFO  L225             Difference]: With dead ends: 225
[2020-10-16 11:41:01,385 INFO  L226             Difference]: Without dead ends: 223
[2020-10-16 11:41:01,385 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:41:01,386 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2020-10-16 11:41:01,388 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 161.
[2020-10-16 11:41:01,388 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 161 states.
[2020-10-16 11:41:01,389 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 407 transitions.
[2020-10-16 11:41:01,389 INFO  L78                 Accepts]: Start accepts. Automaton has 161 states and 407 transitions. Word has length 14
[2020-10-16 11:41:01,389 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:01,389 INFO  L481      AbstractCegarLoop]: Abstraction has 161 states and 407 transitions.
[2020-10-16 11:41:01,389 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:01,389 INFO  L276                IsEmpty]: Start isEmpty. Operand 161 states and 407 transitions.
[2020-10-16 11:41:01,389 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:01,390 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:01,390 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:01,590 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:01,591 INFO  L429      AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:01,591 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:01,591 INFO  L82        PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 127 times
[2020-10-16 11:41:01,591 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:01,592 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883160170]
[2020-10-16 11:41:01,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:01,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:01,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:01,750 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883160170]
[2020-10-16 11:41:01,750 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290504821]
[2020-10-16 11:41:01,750 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:01,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:01,793 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:01,794 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:02,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:02,012 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:02,012 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:02,012 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542791849]
[2020-10-16 11:41:02,013 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:02,013 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:02,013 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:02,013 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:02,013 INFO  L87              Difference]: Start difference. First operand 161 states and 407 transitions. Second operand 17 states.
[2020-10-16 11:41:02,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:02,377 INFO  L93              Difference]: Finished difference Result 214 states and 509 transitions.
[2020-10-16 11:41:02,378 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-16 11:41:02,378 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:02,378 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:02,378 INFO  L225             Difference]: With dead ends: 214
[2020-10-16 11:41:02,379 INFO  L226             Difference]: Without dead ends: 212
[2020-10-16 11:41:02,379 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:41:02,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2020-10-16 11:41:02,381 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 160.
[2020-10-16 11:41:02,382 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 160 states.
[2020-10-16 11:41:02,382 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 404 transitions.
[2020-10-16 11:41:02,382 INFO  L78                 Accepts]: Start accepts. Automaton has 160 states and 404 transitions. Word has length 14
[2020-10-16 11:41:02,382 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:02,382 INFO  L481      AbstractCegarLoop]: Abstraction has 160 states and 404 transitions.
[2020-10-16 11:41:02,383 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:02,383 INFO  L276                IsEmpty]: Start isEmpty. Operand 160 states and 404 transitions.
[2020-10-16 11:41:02,383 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:02,383 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:02,383 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:02,583 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:02,584 INFO  L429      AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:02,584 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:02,584 INFO  L82        PathProgramCache]: Analyzing trace with hash -1283823508, now seen corresponding path program 128 times
[2020-10-16 11:41:02,585 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:02,585 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255397478]
[2020-10-16 11:41:02,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:02,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:02,758 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:02,758 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255397478]
[2020-10-16 11:41:02,759 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813438356]
[2020-10-16 11:41:02,759 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:02,798 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:41:02,798 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:02,798 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:02,799 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:03,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:03,013 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:03,013 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:03,013 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487354333]
[2020-10-16 11:41:03,014 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:03,014 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:03,014 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:03,014 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:03,014 INFO  L87              Difference]: Start difference. First operand 160 states and 404 transitions. Second operand 17 states.
[2020-10-16 11:41:03,276 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:03,277 INFO  L93              Difference]: Finished difference Result 203 states and 486 transitions.
[2020-10-16 11:41:03,277 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:41:03,278 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:03,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:03,278 INFO  L225             Difference]: With dead ends: 203
[2020-10-16 11:41:03,278 INFO  L226             Difference]: Without dead ends: 201
[2020-10-16 11:41:03,279 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:41:03,279 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 201 states.
[2020-10-16 11:41:03,281 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 158.
[2020-10-16 11:41:03,281 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 158 states.
[2020-10-16 11:41:03,282 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 397 transitions.
[2020-10-16 11:41:03,282 INFO  L78                 Accepts]: Start accepts. Automaton has 158 states and 397 transitions. Word has length 14
[2020-10-16 11:41:03,282 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:03,282 INFO  L481      AbstractCegarLoop]: Abstraction has 158 states and 397 transitions.
[2020-10-16 11:41:03,282 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:03,282 INFO  L276                IsEmpty]: Start isEmpty. Operand 158 states and 397 transitions.
[2020-10-16 11:41:03,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:03,283 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:03,283 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:03,483 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161
[2020-10-16 11:41:03,484 INFO  L429      AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:03,484 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:03,484 INFO  L82        PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 129 times
[2020-10-16 11:41:03,485 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:03,485 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078531242]
[2020-10-16 11:41:03,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:03,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:03,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:03,693 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078531242]
[2020-10-16 11:41:03,693 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648257719]
[2020-10-16 11:41:03,694 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:03,741 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:41:03,741 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:03,742 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:03,743 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:03,951 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:03,952 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:03,952 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:03,952 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303064249]
[2020-10-16 11:41:03,952 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:03,953 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:03,953 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:03,953 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:03,953 INFO  L87              Difference]: Start difference. First operand 158 states and 397 transitions. Second operand 17 states.
[2020-10-16 11:41:04,031 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:04,031 INFO  L93              Difference]: Finished difference Result 212 states and 504 transitions.
[2020-10-16 11:41:04,032 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-16 11:41:04,032 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:04,032 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:04,032 INFO  L225             Difference]: With dead ends: 212
[2020-10-16 11:41:04,032 INFO  L226             Difference]: Without dead ends: 210
[2020-10-16 11:41:04,033 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306
[2020-10-16 11:41:04,033 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 210 states.
[2020-10-16 11:41:04,035 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166.
[2020-10-16 11:41:04,035 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 166 states.
[2020-10-16 11:41:04,036 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 421 transitions.
[2020-10-16 11:41:04,036 INFO  L78                 Accepts]: Start accepts. Automaton has 166 states and 421 transitions. Word has length 14
[2020-10-16 11:41:04,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:04,036 INFO  L481      AbstractCegarLoop]: Abstraction has 166 states and 421 transitions.
[2020-10-16 11:41:04,036 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:04,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 166 states and 421 transitions.
[2020-10-16 11:41:04,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:04,037 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:04,037 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:04,237 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:04,238 INFO  L429      AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:04,238 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:04,238 INFO  L82        PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 130 times
[2020-10-16 11:41:04,239 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:04,239 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293699932]
[2020-10-16 11:41:04,239 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:04,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:04,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:04,441 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293699932]
[2020-10-16 11:41:04,441 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19833102]
[2020-10-16 11:41:04,442 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:04,488 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:41:04,488 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:04,489 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:04,489 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:04,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:04,701 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:04,701 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:04,702 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468200405]
[2020-10-16 11:41:04,702 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:04,702 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:04,702 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:04,702 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:04,703 INFO  L87              Difference]: Start difference. First operand 166 states and 421 transitions. Second operand 17 states.
[2020-10-16 11:41:04,982 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:04,982 INFO  L93              Difference]: Finished difference Result 217 states and 513 transitions.
[2020-10-16 11:41:04,983 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:41:04,983 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:04,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:04,984 INFO  L225             Difference]: With dead ends: 217
[2020-10-16 11:41:04,984 INFO  L226             Difference]: Without dead ends: 215
[2020-10-16 11:41:04,984 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:41:04,985 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 215 states.
[2020-10-16 11:41:04,988 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 164.
[2020-10-16 11:41:04,988 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 164 states.
[2020-10-16 11:41:04,988 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions.
[2020-10-16 11:41:04,989 INFO  L78                 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14
[2020-10-16 11:41:04,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:04,989 INFO  L481      AbstractCegarLoop]: Abstraction has 164 states and 415 transitions.
[2020-10-16 11:41:04,989 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:04,989 INFO  L276                IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions.
[2020-10-16 11:41:04,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:04,990 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:04,990 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:05,199 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:05,200 INFO  L429      AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:05,200 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:05,200 INFO  L82        PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 131 times
[2020-10-16 11:41:05,201 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:05,201 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958909856]
[2020-10-16 11:41:05,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:05,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:05,362 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:05,362 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958909856]
[2020-10-16 11:41:05,362 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091318100]
[2020-10-16 11:41:05,362 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:05,403 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:41:05,403 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:05,404 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:05,404 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:06,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:06,349 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:06,349 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:06,349 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030112754]
[2020-10-16 11:41:06,349 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:06,350 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:06,350 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:06,350 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:06,350 INFO  L87              Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states.
[2020-10-16 11:41:06,730 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:06,730 INFO  L93              Difference]: Finished difference Result 227 states and 533 transitions.
[2020-10-16 11:41:06,731 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:41:06,731 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:06,731 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:06,732 INFO  L225             Difference]: With dead ends: 227
[2020-10-16 11:41:06,732 INFO  L226             Difference]: Without dead ends: 225
[2020-10-16 11:41:06,732 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:41:06,733 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2020-10-16 11:41:06,735 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 162.
[2020-10-16 11:41:06,736 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 162 states.
[2020-10-16 11:41:06,736 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 409 transitions.
[2020-10-16 11:41:06,736 INFO  L78                 Accepts]: Start accepts. Automaton has 162 states and 409 transitions. Word has length 14
[2020-10-16 11:41:06,736 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:06,737 INFO  L481      AbstractCegarLoop]: Abstraction has 162 states and 409 transitions.
[2020-10-16 11:41:06,737 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:06,737 INFO  L276                IsEmpty]: Start isEmpty. Operand 162 states and 409 transitions.
[2020-10-16 11:41:06,737 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:06,737 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:06,737 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:06,939 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:06,940 INFO  L429      AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:06,940 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:06,940 INFO  L82        PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 132 times
[2020-10-16 11:41:06,941 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:06,941 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820686674]
[2020-10-16 11:41:06,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:06,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:07,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:07,083 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820686674]
[2020-10-16 11:41:07,083 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920010303]
[2020-10-16 11:41:07,083 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:07,125 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:41:07,126 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:07,127 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:07,127 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:07,371 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:07,372 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:07,372 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:07,372 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077702413]
[2020-10-16 11:41:07,372 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:07,373 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:07,373 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:07,373 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:07,373 INFO  L87              Difference]: Start difference. First operand 162 states and 409 transitions. Second operand 17 states.
[2020-10-16 11:41:07,853 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:07,853 INFO  L93              Difference]: Finished difference Result 227 states and 533 transitions.
[2020-10-16 11:41:07,854 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-16 11:41:07,854 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:07,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:07,855 INFO  L225             Difference]: With dead ends: 227
[2020-10-16 11:41:07,855 INFO  L226             Difference]: Without dead ends: 225
[2020-10-16 11:41:07,855 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650
[2020-10-16 11:41:07,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2020-10-16 11:41:07,857 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 164.
[2020-10-16 11:41:07,857 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 164 states.
[2020-10-16 11:41:07,858 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions.
[2020-10-16 11:41:07,858 INFO  L78                 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14
[2020-10-16 11:41:07,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:07,858 INFO  L481      AbstractCegarLoop]: Abstraction has 164 states and 415 transitions.
[2020-10-16 11:41:07,858 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:07,858 INFO  L276                IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions.
[2020-10-16 11:41:07,858 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:07,859 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:07,859 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:08,061 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165
[2020-10-16 11:41:08,061 INFO  L429      AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:08,061 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:08,062 INFO  L82        PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 133 times
[2020-10-16 11:41:08,062 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:08,062 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207874525]
[2020-10-16 11:41:08,063 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:08,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:08,212 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:08,212 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207874525]
[2020-10-16 11:41:08,212 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617547693]
[2020-10-16 11:41:08,212 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:08,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:08,253 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:08,253 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:11,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:11,561 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:11,561 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:11,561 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693196970]
[2020-10-16 11:41:11,562 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:11,562 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:11,562 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:11,562 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272
[2020-10-16 11:41:11,562 INFO  L87              Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states.
[2020-10-16 11:41:15,814 WARN  L193               SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 41 DAG size of output: 37
[2020-10-16 11:41:16,223 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:16,223 INFO  L93              Difference]: Finished difference Result 237 states and 553 transitions.
[2020-10-16 11:41:16,224 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-10-16 11:41:16,225 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:16,225 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:16,225 INFO  L225             Difference]: With dead ends: 237
[2020-10-16 11:41:16,226 INFO  L226             Difference]: Without dead ends: 235
[2020-10-16 11:41:16,226 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=205, Invalid=444, Unknown=1, NotChecked=0, Total=650
[2020-10-16 11:41:16,227 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 235 states.
[2020-10-16 11:41:16,229 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 163.
[2020-10-16 11:41:16,229 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 163 states.
[2020-10-16 11:41:16,229 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions.
[2020-10-16 11:41:16,230 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14
[2020-10-16 11:41:16,230 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:16,230 INFO  L481      AbstractCegarLoop]: Abstraction has 163 states and 412 transitions.
[2020-10-16 11:41:16,230 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:16,230 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions.
[2020-10-16 11:41:16,231 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:16,231 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:16,231 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:16,431 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166
[2020-10-16 11:41:16,432 INFO  L429      AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:16,432 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:16,432 INFO  L82        PathProgramCache]: Analyzing trace with hash 292227518, now seen corresponding path program 134 times
[2020-10-16 11:41:16,433 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:16,433 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292011257]
[2020-10-16 11:41:16,433 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:16,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:16,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:16,591 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292011257]
[2020-10-16 11:41:16,591 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732526174]
[2020-10-16 11:41:16,592 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:16,632 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:41:16,633 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:16,633 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:16,634 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:17,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:17,731 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:17,731 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:17,731 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187953893]
[2020-10-16 11:41:17,731 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:17,732 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:17,732 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:17,732 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:17,732 INFO  L87              Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states.
[2020-10-16 11:41:18,272 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:18,272 INFO  L93              Difference]: Finished difference Result 229 states and 539 transitions.
[2020-10-16 11:41:18,273 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-10-16 11:41:18,274 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:18,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:18,274 INFO  L225             Difference]: With dead ends: 229
[2020-10-16 11:41:18,274 INFO  L226             Difference]: Without dead ends: 227
[2020-10-16 11:41:18,275 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650
[2020-10-16 11:41:18,275 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 227 states.
[2020-10-16 11:41:18,277 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 160.
[2020-10-16 11:41:18,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 160 states.
[2020-10-16 11:41:18,278 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 403 transitions.
[2020-10-16 11:41:18,278 INFO  L78                 Accepts]: Start accepts. Automaton has 160 states and 403 transitions. Word has length 14
[2020-10-16 11:41:18,278 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:18,278 INFO  L481      AbstractCegarLoop]: Abstraction has 160 states and 403 transitions.
[2020-10-16 11:41:18,278 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:18,279 INFO  L276                IsEmpty]: Start isEmpty. Operand 160 states and 403 transitions.
[2020-10-16 11:41:18,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:18,279 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:18,279 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:18,479 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167
[2020-10-16 11:41:18,480 INFO  L429      AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:18,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:18,481 INFO  L82        PathProgramCache]: Analyzing trace with hash 319903357, now seen corresponding path program 135 times
[2020-10-16 11:41:18,481 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:18,481 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239644095]
[2020-10-16 11:41:18,481 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:18,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:18,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:18,625 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239644095]
[2020-10-16 11:41:18,625 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073479728]
[2020-10-16 11:41:18,625 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:18,670 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:41:18,671 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:18,672 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:18,672 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:18,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:18,892 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:18,893 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:18,893 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93658203]
[2020-10-16 11:41:18,893 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:18,893 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:18,894 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:18,894 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:18,894 INFO  L87              Difference]: Start difference. First operand 160 states and 403 transitions. Second operand 17 states.
[2020-10-16 11:41:19,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:19,468 INFO  L93              Difference]: Finished difference Result 225 states and 529 transitions.
[2020-10-16 11:41:19,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:41:19,469 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:19,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:19,470 INFO  L225             Difference]: With dead ends: 225
[2020-10-16 11:41:19,470 INFO  L226             Difference]: Without dead ends: 223
[2020-10-16 11:41:19,471 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812
[2020-10-16 11:41:19,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2020-10-16 11:41:19,473 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 163.
[2020-10-16 11:41:19,474 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 163 states.
[2020-10-16 11:41:19,474 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions.
[2020-10-16 11:41:19,474 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14
[2020-10-16 11:41:19,474 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:19,474 INFO  L481      AbstractCegarLoop]: Abstraction has 163 states and 412 transitions.
[2020-10-16 11:41:19,474 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:19,475 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions.
[2020-10-16 11:41:19,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:19,475 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:19,475 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:19,676 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168
[2020-10-16 11:41:19,676 INFO  L429      AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:19,676 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:19,677 INFO  L82        PathProgramCache]: Analyzing trace with hash 319904318, now seen corresponding path program 136 times
[2020-10-16 11:41:19,677 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:19,677 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099073894]
[2020-10-16 11:41:19,677 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:19,681 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:19,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:19,830 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099073894]
[2020-10-16 11:41:19,830 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856475109]
[2020-10-16 11:41:19,830 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:19,874 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:41:19,874 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:19,875 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:19,875 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:20,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:20,190 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:20,190 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:20,191 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805823629]
[2020-10-16 11:41:20,191 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:20,191 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:20,192 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:20,192 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:20,192 INFO  L87              Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states.
[2020-10-16 11:41:21,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:21,175 INFO  L93              Difference]: Finished difference Result 239 states and 557 transitions.
[2020-10-16 11:41:21,177 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-10-16 11:41:21,177 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:21,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:21,178 INFO  L225             Difference]: With dead ends: 239
[2020-10-16 11:41:21,179 INFO  L226             Difference]: Without dead ends: 237
[2020-10-16 11:41:21,179 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812
[2020-10-16 11:41:21,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 237 states.
[2020-10-16 11:41:21,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 163.
[2020-10-16 11:41:21,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 163 states.
[2020-10-16 11:41:21,184 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions.
[2020-10-16 11:41:21,184 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14
[2020-10-16 11:41:21,184 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:21,184 INFO  L481      AbstractCegarLoop]: Abstraction has 163 states and 412 transitions.
[2020-10-16 11:41:21,185 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:21,185 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions.
[2020-10-16 11:41:21,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:21,185 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:21,185 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:21,397 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169
[2020-10-16 11:41:21,398 INFO  L429      AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:21,398 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:21,398 INFO  L82        PathProgramCache]: Analyzing trace with hash 319933148, now seen corresponding path program 137 times
[2020-10-16 11:41:21,398 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:21,398 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026476535]
[2020-10-16 11:41:21,399 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:21,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:21,549 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:21,550 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026476535]
[2020-10-16 11:41:21,550 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458995808]
[2020-10-16 11:41:21,550 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:21,601 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-10-16 11:41:21,602 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:21,603 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:21,603 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:21,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:21,841 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:21,841 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:21,841 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370807971]
[2020-10-16 11:41:21,842 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:21,842 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:21,842 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:21,843 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:21,843 INFO  L87              Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states.
[2020-10-16 11:41:22,332 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:22,332 INFO  L93              Difference]: Finished difference Result 234 states and 550 transitions.
[2020-10-16 11:41:22,333 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-10-16 11:41:22,333 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:22,334 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:22,334 INFO  L225             Difference]: With dead ends: 234
[2020-10-16 11:41:22,334 INFO  L226             Difference]: Without dead ends: 232
[2020-10-16 11:41:22,335 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702
[2020-10-16 11:41:22,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 232 states.
[2020-10-16 11:41:22,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 163.
[2020-10-16 11:41:22,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 163 states.
[2020-10-16 11:41:22,337 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions.
[2020-10-16 11:41:22,338 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14
[2020-10-16 11:41:22,338 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:22,338 INFO  L481      AbstractCegarLoop]: Abstraction has 163 states and 412 transitions.
[2020-10-16 11:41:22,338 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:22,338 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions.
[2020-10-16 11:41:22,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:22,339 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:22,339 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:22,546 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170
[2020-10-16 11:41:22,547 INFO  L429      AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:22,547 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:22,548 INFO  L82        PathProgramCache]: Analyzing trace with hash 320857630, now seen corresponding path program 138 times
[2020-10-16 11:41:22,548 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:22,548 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918817922]
[2020-10-16 11:41:22,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:22,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:22,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:22,702 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918817922]
[2020-10-16 11:41:22,703 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124297914]
[2020-10-16 11:41:22,703 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:22,744 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-10-16 11:41:22,745 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:22,746 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:22,747 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:22,982 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:22,983 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:22,983 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:22,983 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949465492]
[2020-10-16 11:41:22,984 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:22,984 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:22,984 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:22,984 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:22,984 INFO  L87              Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states.
[2020-10-16 11:41:23,412 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:23,412 INFO  L93              Difference]: Finished difference Result 218 states and 515 transitions.
[2020-10-16 11:41:23,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-10-16 11:41:23,413 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:23,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:23,414 INFO  L225             Difference]: With dead ends: 218
[2020-10-16 11:41:23,414 INFO  L226             Difference]: Without dead ends: 216
[2020-10-16 11:41:23,415 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:41:23,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 216 states.
[2020-10-16 11:41:23,417 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 159.
[2020-10-16 11:41:23,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 159 states.
[2020-10-16 11:41:23,418 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 399 transitions.
[2020-10-16 11:41:23,418 INFO  L78                 Accepts]: Start accepts. Automaton has 159 states and 399 transitions. Word has length 14
[2020-10-16 11:41:23,418 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:23,418 INFO  L481      AbstractCegarLoop]: Abstraction has 159 states and 399 transitions.
[2020-10-16 11:41:23,418 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:23,418 INFO  L276                IsEmpty]: Start isEmpty. Operand 159 states and 399 transitions.
[2020-10-16 11:41:23,418 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:23,419 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:23,419 INFO  L422         BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:23,619 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:23,620 INFO  L429      AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:23,620 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:23,620 INFO  L82        PathProgramCache]: Analyzing trace with hash -1429448084, now seen corresponding path program 139 times
[2020-10-16 11:41:23,621 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:23,621 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889685515]
[2020-10-16 11:41:23,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:23,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:23,830 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:23,830 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889685515]
[2020-10-16 11:41:23,830 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756539760]
[2020-10-16 11:41:23,831 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:23,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:23,874 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:23,875 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:24,100 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:24,100 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:24,101 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:24,101 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129536441]
[2020-10-16 11:41:24,101 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:24,101 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:24,102 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:24,102 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:24,102 INFO  L87              Difference]: Start difference. First operand 159 states and 399 transitions. Second operand 17 states.
[2020-10-16 11:41:24,257 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:24,257 INFO  L93              Difference]: Finished difference Result 208 states and 495 transitions.
[2020-10-16 11:41:24,258 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-16 11:41:24,258 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:24,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:24,259 INFO  L225             Difference]: With dead ends: 208
[2020-10-16 11:41:24,259 INFO  L226             Difference]: Without dead ends: 206
[2020-10-16 11:41:24,259 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342
[2020-10-16 11:41:24,259 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2020-10-16 11:41:24,261 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 165.
[2020-10-16 11:41:24,262 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 165 states.
[2020-10-16 11:41:24,262 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 417 transitions.
[2020-10-16 11:41:24,263 INFO  L78                 Accepts]: Start accepts. Automaton has 165 states and 417 transitions. Word has length 14
[2020-10-16 11:41:24,263 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:24,263 INFO  L481      AbstractCegarLoop]: Abstraction has 165 states and 417 transitions.
[2020-10-16 11:41:24,263 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:24,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 165 states and 417 transitions.
[2020-10-16 11:41:24,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:24,263 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:24,263 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:24,464 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:24,464 INFO  L429      AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:24,465 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:24,465 INFO  L82        PathProgramCache]: Analyzing trace with hash -1429447123, now seen corresponding path program 140 times
[2020-10-16 11:41:24,465 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:24,465 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054567182]
[2020-10-16 11:41:24,466 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:24,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:24,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:24,643 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054567182]
[2020-10-16 11:41:24,643 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507573105]
[2020-10-16 11:41:24,643 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:24,685 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:41:24,685 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:24,686 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:24,687 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:24,901 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:24,901 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:24,901 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:24,902 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543238479]
[2020-10-16 11:41:24,902 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:24,902 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:24,903 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:24,903 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:24,903 INFO  L87              Difference]: Start difference. First operand 165 states and 417 transitions. Second operand 17 states.
[2020-10-16 11:41:25,270 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:25,270 INFO  L93              Difference]: Finished difference Result 229 states and 536 transitions.
[2020-10-16 11:41:25,271 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-16 11:41:25,272 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:25,272 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:25,272 INFO  L225             Difference]: With dead ends: 229
[2020-10-16 11:41:25,272 INFO  L226             Difference]: Without dead ends: 227
[2020-10-16 11:41:25,273 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552
[2020-10-16 11:41:25,273 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 227 states.
[2020-10-16 11:41:25,276 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 163.
[2020-10-16 11:41:25,276 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 163 states.
[2020-10-16 11:41:25,277 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 411 transitions.
[2020-10-16 11:41:25,277 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 411 transitions. Word has length 14
[2020-10-16 11:41:25,277 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:25,277 INFO  L481      AbstractCegarLoop]: Abstraction has 163 states and 411 transitions.
[2020-10-16 11:41:25,277 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:25,277 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 411 transitions.
[2020-10-16 11:41:25,278 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:25,278 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:25,278 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:25,478 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:25,479 INFO  L429      AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:25,479 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:25,480 INFO  L82        PathProgramCache]: Analyzing trace with hash -1429418293, now seen corresponding path program 141 times
[2020-10-16 11:41:25,480 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:25,480 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538514943]
[2020-10-16 11:41:25,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:25,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:25,641 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:25,642 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538514943]
[2020-10-16 11:41:25,642 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790049678]
[2020-10-16 11:41:25,642 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:25,687 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-16 11:41:25,687 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:25,688 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:25,689 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:25,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:25,953 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:25,953 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:25,953 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760234522]
[2020-10-16 11:41:25,953 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:25,953 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:25,953 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:25,954 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:25,954 INFO  L87              Difference]: Start difference. First operand 163 states and 411 transitions. Second operand 17 states.
[2020-10-16 11:41:26,413 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:26,413 INFO  L93              Difference]: Finished difference Result 235 states and 548 transitions.
[2020-10-16 11:41:26,414 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-16 11:41:26,414 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:26,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:26,415 INFO  L225             Difference]: With dead ends: 235
[2020-10-16 11:41:26,415 INFO  L226             Difference]: Without dead ends: 233
[2020-10-16 11:41:26,415 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600
[2020-10-16 11:41:26,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2020-10-16 11:41:26,417 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 161.
[2020-10-16 11:41:26,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 161 states.
[2020-10-16 11:41:26,418 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 405 transitions.
[2020-10-16 11:41:26,418 INFO  L78                 Accepts]: Start accepts. Automaton has 161 states and 405 transitions. Word has length 14
[2020-10-16 11:41:26,418 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:26,418 INFO  L481      AbstractCegarLoop]: Abstraction has 161 states and 405 transitions.
[2020-10-16 11:41:26,418 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:26,418 INFO  L276                IsEmpty]: Start isEmpty. Operand 161 states and 405 transitions.
[2020-10-16 11:41:26,419 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:26,419 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:26,419 INFO  L422         BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:26,619 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:26,620 INFO  L429      AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:26,620 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:26,620 INFO  L82        PathProgramCache]: Analyzing trace with hash -1428524563, now seen corresponding path program 142 times
[2020-10-16 11:41:26,621 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:26,621 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772718835]
[2020-10-16 11:41:26,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:26,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:26,754 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:26,755 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772718835]
[2020-10-16 11:41:26,755 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412933096]
[2020-10-16 11:41:26,755 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:26,805 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-16 11:41:26,805 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:26,806 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:26,807 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:27,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:27,056 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:27,057 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:27,057 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973766419]
[2020-10-16 11:41:27,057 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:27,057 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:27,057 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:27,057 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:41:27,057 INFO  L87              Difference]: Start difference. First operand 161 states and 405 transitions. Second operand 17 states.
[2020-10-16 11:41:27,584 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:41:27,585 INFO  L93              Difference]: Finished difference Result 233 states and 544 transitions.
[2020-10-16 11:41:27,585 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-10-16 11:41:27,586 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2020-10-16 11:41:27,586 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:41:27,586 INFO  L225             Difference]: With dead ends: 233
[2020-10-16 11:41:27,586 INFO  L226             Difference]: Without dead ends: 231
[2020-10-16 11:41:27,586 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702
[2020-10-16 11:41:27,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 231 states.
[2020-10-16 11:41:27,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 163.
[2020-10-16 11:41:27,590 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 163 states.
[2020-10-16 11:41:27,591 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 411 transitions.
[2020-10-16 11:41:27,591 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 411 transitions. Word has length 14
[2020-10-16 11:41:27,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:41:27,591 INFO  L481      AbstractCegarLoop]: Abstraction has 163 states and 411 transitions.
[2020-10-16 11:41:27,592 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:41:27,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 411 transitions.
[2020-10-16 11:41:27,592 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-16 11:41:27,592 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:41:27,592 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-16 11:41:27,803 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:27,803 INFO  L429      AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-16 11:41:27,804 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:41:27,804 INFO  L82        PathProgramCache]: Analyzing trace with hash -1428523602, now seen corresponding path program 143 times
[2020-10-16 11:41:27,804 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:41:27,804 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889881443]
[2020-10-16 11:41:27,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:41:27,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:41:27,939 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:27,940 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889881443]
[2020-10-16 11:41:27,940 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357086388]
[2020-10-16 11:41:27,940 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:27,983 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-16 11:41:27,983 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-16 11:41:27,984 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-16 11:41:27,984 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-10-16 11:41:31,440 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:41:31,441 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-16 11:41:31,441 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2020-10-16 11:41:31,441 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654554427]
[2020-10-16 11:41:31,441 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:41:31,441 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:41:31,442 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:41:31,442 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=208, Unknown=1, NotChecked=0, Total=272
[2020-10-16 11:41:31,442 INFO  L87              Difference]: Start difference. First operand 163 states and 411 transitions. Second operand 17 states.
Received shutdown request...
[2020-10-16 11:41:33,697 WARN  L210               SmtUtils]: Removed 1 from assertion stack
[2020-10-16 11:41:33,698 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-16 11:41:33,898 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-16 11:41:33,899 WARN  L546      AbstractCegarLoop]: Verification canceled
[2020-10-16 11:41:33,903 WARN  L235   ceAbstractionStarter]: Timeout
[2020-10-16 11:41:33,903 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:41:33 BasicIcfg
[2020-10-16 11:41:33,903 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-16 11:41:33,905 INFO  L168              Benchmark]: Toolchain (without parser) took 273769.93 ms. Allocated memory was 145.2 MB in the beginning and 208.7 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 105.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB.
[2020-10-16 11:41:33,905 INFO  L168              Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-10-16 11:41:33,906 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 717.60 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.5 MB in the beginning and 161.6 MB in the end (delta: -62.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB.
[2020-10-16 11:41:33,906 INFO  L168              Benchmark]: Boogie Procedure Inliner took 45.90 ms. Allocated memory is still 201.9 MB. Free memory was 161.6 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2020-10-16 11:41:33,906 INFO  L168              Benchmark]: Boogie Preprocessor took 36.78 ms. Allocated memory is still 201.9 MB. Free memory was 159.5 MB in the beginning and 158.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-10-16 11:41:33,907 INFO  L168              Benchmark]: RCFGBuilder took 389.13 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 137.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB.
[2020-10-16 11:41:33,907 INFO  L168              Benchmark]: TraceAbstraction took 272575.00 ms. Allocated memory was 201.9 MB in the beginning and 208.7 MB in the end (delta: 6.8 MB). Free memory was 137.1 MB in the beginning and 105.5 MB in the end (delta: 31.6 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB.
[2020-10-16 11:41:33,908 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.47 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 717.60 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.5 MB in the beginning and 161.6 MB in the end (delta: -62.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 45.90 ms. Allocated memory is still 201.9 MB. Free memory was 161.6 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 36.78 ms. Allocated memory is still 201.9 MB. Free memory was 159.5 MB in the beginning and 158.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 389.13 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 137.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 272575.00 ms. Allocated memory was 201.9 MB in the beginning and 208.7 MB in the end (delta: 6.8 MB). Free memory was 137.1 MB in the beginning and 105.5 MB in the end (delta: 31.6 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: PetriNetLargeBlockEncoding benchmarks
    561 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 20 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 59 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 50 TotalNumberOfCompositions, 943 MoverChecksTotal
  - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was constructing difference of abstraction (163states) and FLOYD_HOARE automaton (currently 8 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 41 for 2050ms..
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 272.4s, OverallIterations: 177, TraceHistogramMax: 6, AutomataDifference: 167.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 2299 SDtfs, 16006 SDslu, 15426 SDs, 0 SdLazy, 10932 SolverSat, 3892 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 71.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4365 GetRequests, 830 SyntacticMatches, 150 SemanticMatches, 3384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17173 ImplicationChecksByTransitivity, 141.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 176 MinimizatonAttempts, 8006 StatesRemovedByMinimization, 176 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 57.9s InterpolantComputationTime, 4306 NumberOfCodeBlocks, 4306 NumberOfCodeBlocksAsserted, 537 NumberOfCheckSat, 3960 ConstructedInterpolants, 9 QuantifiedInterpolants, 411183 SizeOfPredicates, 169 NumberOfNonLiveVariables, 14616 ConjunctsInSsa, 1641 ConjunctsInUnsatCore, 346 InterpolantComputations, 8 PerfectInterpolantSequences, 0/1656 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown